Anticircumvention under the Digital Millennium Copyright Act and Reverse Engineering: Recent Legal Developments

CRS Report for Congress
Anticircumvention under the
Digital Millennium Copyright Act
and Reverse Engineering:
Recent Legal Developments
December 10, 2004
Robin Jeweler
Legislative Attorney
American Law Division

Congressional Research Service ˜ The Library of Congress

Anticircumvention under the Digital Millennium
Copyright Act and Reverse Engineering: Recent Legal
The Digital Millennium Copyright Act (DMCA) prohibits individuals from
manufacturing, selling, or trafficking in technology, products, services, or devices
that circumvent technology designed to control access to a copyrighted work. This
is known as the DMCA’s “anticircumvention” provision. Although most commonly
invoked in the context of digital piracy of music, motion pictures, and other
entertainment-related media, another genre of anticircumvention-based cases is
making its way through the courts. These cases involve the initiation of
anticircumvention litigation for what some argue are anti-competitive purposes in the
marketing and sale of durable goods.
The practice of reverse engineering allows others to identify and analyze the
creative versus the functional aspects of copyrighted software and to utilize them to
some degree. In some contexts, reverse engineering has been held by the courts to
be a fair use of copyright-protected property. There is also an express, limited
statutory exemption for reverse engineering under the DMCA. How the practice and
use of reverse engineering for commercial goals relates to the relatively new
protections against circumvention is of interest to many. They are concerned with
the extent to which access-control technology is likely be employed to extend (or
attempt to extend) a copyright holder’s control over durable goods with copyrighted
components and the secondary markets for such goods.
This report examines two recent decisions from U.S. Courts of Appeals,th
Lexmark International, Inc. v. Static Control Components, Inc., 387 F.3d 522 (6 Cir.
2004), and Chamberlain Group, Inc. v. Skylink Technologies, Inc., 381 F.3d 1178
(Fed. Cir. 2004). Both cases allege violation of the anticircumvention statute with
respect to development and sale of consumer goods. In Lexmark, the defendant
marketed a microchip that allowed third-party manufacturers to sell toner cartridges
that worked with the plaintiff’s printer. In Chamberlain, the defendant sold a
universal garage door opener transmitter that worked with the plaintiff’s garage door
opener. In both cases, the courts found that the actions of the defendants did not
violate the anticircumvention provisions of the DMCA. In doing so, the courts had
to reconcile closely related aspects of copyright law with the strictures of the DMCA.
This report will not be updated.

Background ..............................................1
Exceptions to the copyright monopoly: reverse engineering.........2
Lexmark International v. Static Control Components, Inc..........4
Chamberlain Group, Inc. v. Skylink Technologies, Inc.............9
Conclusion ..............................................15

Anticircumvention under the Digital
Millennium Copyright Act and Reverse
Engineering: Recent Legal Developments
Background. The Digital Millennium Copyright Act (DMCA) prohibits
individuals from manufacturing, selling, or trafficking in technology, products,
services, or devices that circumvent technology designed to control access to a
copyrighted work.1 This is known as the DMCA’s “anticircumvention” provision.
Enacted in 1998, the law became effective in 2000. The DMCA’s anticircumvention
provisions have proven to be controversial. Proponents argue that they are essential
to protect the creation and distribution of, and the market for digital intellectual
property (IP), while critics argue that they extend the copyright monopoly beyond its
intended scope and thwart the public’s ability to access materials for permissible
purposes. 2
The statute is best known in the context of encryption programs and access
control “gates” interposed between the public and copyrighted digital entertainment
media, e.g., music and motion pictures.3 Here, critics of the DMCA argue that the
anticircumvention provisions allow copyright holders to impose new and overly
restrictive conditions on content users. This new layer of IP protection has been4
referred to as “paracopyright.” It refers to the ability of content owners to use
conditions for access in order to extend control over usage of copyrighted work.
The focus of this report, however, is another genre of anticircumvention-based
cases making their way through the courts. These cases involve the initiation of
anticircumvention litigation for what some argue are anti-competitive purposes in the
marketing and sale of durable goods. The question is, when a manufacturer utilizes

1 17 U.S.C. § 1201 entitled “Circumvention of copyright protection systems.”
2 While a copyright owner’s exclusive rights in a copyrighted work is set forth at 17 U.S.C.

106, exceptions to exclusive rights are set forth at, e.g., 17 U.S.C. §§ 107, 108, 110, 111,


3 The statute was widely publicized in a successful suit by movie studios to prevent the
posting over the Internet of a code to circumvent the Content Scrambling System, an
encryption program for digital motion pictures. Universal City Studios v. Corley, 273 F.3d

429 (2d Cir. 2001).

4 H.R. Rept. 105-551, Part 2, 105th Cong., 2d Sess. 24-25 (1998) quoting a letter from
copyright law professors arguing that enactment of anticircumvention legislation “would
represent an unprecedented departure into the zone of what might be called paracopyright
– an uncharted new domain of legislative provisions designed to strengthen copyright
protection by regulating conduct which traditionally has fallen outside the regulatory sphere
of intellectual property law.”

software as a “gate” to enable, control, or restrict access to consumer goods
containing copyrighted material, to what extent does it preclude competitors from
circumventing the controls in the engineering of compatible – or competitive –
consumer goods?
This report examines two cases involving 17 U.S.C. § 1201 that involve
commercial interests unrelated to the entertainment industry, specifically,
manufacturers of garage door openers and manufacturers of toner cartridges for
photocopying machines. These cases involve issues that have been the basis for
criticism of the DMCA in a slightly different commercial context, namely, whether
the provisions permit IP owners to extend their copyright monopoly beyond its
intended scope to control consumer goods.
Exceptions to the copyright monopoly: reverse engineering. There
are several statutory and judicially created exceptions to a copyright holder’s right to
control IP. Among the best known is the public’s right to make “fair use” of a5
protected work. Among the judicially-sanctioned interpretations of the fair use
defense to copyright infringement is the right to “reverse engineer” a copyrighted6
computer program to gain an understanding of its unprotected functional elements.
Like all fair use analyses, the context for a court’s decision is intensely fact-specific.
But a court considering the legitimacy of reverse engineering as a fair use will factor
in the public interest in a competitive marketplace for consumer goods. When, for
example, copyrighted computer code functions primarily as a “lock out” code
designed to prevent access to functional as opposed to copyrighted elements of a
durable good, then reverse engineering or other methods of overcoming it may be
permissible. 7
In Sega Enterprises Ltd. v. Accolade, Inc., 8 a U.S. Court of Appeals held that
Accolade, Inc.’s disassembly and reverse engineering of Sega’s copyrighted
computer program was a fair use. Accolade reverse engineered the program in order
to manufacture video games on cartridges that were compatible with Sega’s video
console, Genesis. Because there was no other known method of access, the court
found that Accolade’s use of Sega’s initialization code did not violate the U.S.
Copyright Act. Accolade’s copies of Sega’s software enabled it to discover the
functional requirements for compatibility with the Genesis console. Even though
Accolade’s ultimate purpose was the development of Genesis-compatible games for
sale, its direct use of the copyrighted material and its purpose in reverse engineering
Sega’s code was to study the functional requirements for Genesis compatibility.

5 17 U.S.C. § 107.
6 Sega Enterprises Ltd. v. Accolade, Inc., 977 F.2d 1510 (9th Cir. 1993); See also Sony
Computer Entertainment v. Connectix Corp., 203 F.3d 596 (9th Cir. 2000); Bateman
Mnemonics, Inc., 79 F.3d 1532, 1539 (11 Cir. 1996); Atari Games Corp. v. Nintendo, 975
F.2d 832, 843 (Fed. Cir. 1992).
7 See Julie E. Cohen, Reverse Engineering and the Rise of Electronic Vigilantism:
Intellectual Property Implications of “Lock-Out” Programs, 68 S. CAL. L. REV. 1091 (1994-


8 977 F.2d 1510 (9th Cir. 1993).

Accolade wanted to modify its existing games so that they could be played on the
Genesis console. In reaching its decision, the court noted that
[W]e are free to consider the public benefit resulting from a particular use
notwithstanding the fact that the alleged infringer may gain commercially.
Public benefit need not be direct or tangible, but may arise because the
challenged use serves a public interest. In the case before us, Accolade's
identification of the functional requirements for Genesis compatibility has led to
an increase in the number of independently designed video game programs
offered for use with the Genesis console. It is precisely this growth in creative
expression, based on the dissemination of other creative works and the
unprotected ideas contained in those works, that the Copyright Act was intended
to promote.9
Judicial determination of what activity constitutes a fair use of copyrighted
property is a fluid and evolving doctrine. The anticircumvention provisions of the
DMCA, however, establish offenses wholly distinct from copyright infringement. In
other words, reverse engineering that may be (or have been) permissible under the
Copyright Act may no longer be permissible under the DMCA. To the extent that
the DMCA’s anticircumvention provisions address the narrow issue of manipulating
– or circumventing – technology (whether or not it is copyrightable in its own right)
to access copyrighted technology, its impact on fair use, particularly the employment
of reverse engineering, may have a significant impact in the marketplace.
And, there are still many other legal doctrines that impact the legality of reverse
engineering in any given context. For example, the DMCA itself, at 17 U.S.C. §
1201(f), contains an express exemption for reverse engineering “for the sole purpose
of identifying and analyzing those elements of the program that are necessary to
achieve interoperability of an independently created computer program with other
programs[.]”10 Conversely, the courts have honored contractual terms under state law,
such as licensing agreements and terms of use agreements, that curtail a user’s right
to reverse engineer copyrighted material.11 How do the rights, remedies, and
exceptions in the DMCA relate to comparable ones in the Copyright Act?
In the realm of online entertainment, such as music, film, and electronic books,
critics of the DMCA argue that it has the potential to curtail the public’s right to
make fair use of copyrighted material. In other commercial contexts, litigants argue
that the act’s anticircumvention provisions may thwart access to the permissible fair
use of reverse engineering and thereby permit a copyright holder to leverage a limited
monopoly to control areas outside of that monopoly in the broader world of fungible
consumer goods, a practice traditionally held in check by the judicial doctrine of

9 Id. at 1523. (Citations omitted.)
10 17 U.S.C. § 1201(f)(1).
11 See Bowers v. Baystate Technologies, Inc., 320 F.3d 1317 (Fed. Cir.), cert. denied, 539
U.S. 928 (2003)(Copyright Act did not preempt or narrow scope of a shrink wrap license
agreement that prohibited reverse engineering.) See also, Davidson & Assoc., Inc. v.
Internet Gateway, 334 F.Supp.2d 1164 (E.D.Mo. 2004).

“copyright misuse.”12 But with the “rebalancing” of interests that was effected by
enactment of the DMCA, how far can a manufacturer go in using restrictions on
access control technology to prevent competitors from legitimately using reverse
engineering to develop competitive, interoperable noninfringing consumer goods?13
This question, and the relationship between prohibitions on circumvention and the
underlying law of copyright, makes the anticircumvention cases presently wending
their way through the federal courts of interest to many.
Lexmark International v. Static Control Components, Inc. A U.S.
district court granted Lexmark, a manufacturer of laser printers and printer toner
cartridges, a preliminary injunction against a remanufacturer of replacement
cartridges, Static Control Components (SCC), for copyright infringement and
violation of § 1201 of the DMCA.
A toner cartridge is a device that is inserted within a laser printer and contains
the toner necessary for the printer to print. Plaintiff Lexmark manufacturers two
types of toner cartridges: a regular one that can be refilled by the printer owner or
by a third party remanufacturer and a discounted one for its T-series printers which,
pursuant to a licensing agreement, consumers agree to use only once and return to
Lexmark for recycling. SCC and other remanufacturers refill and sell Lexmark’s
regular toner cartridges.
Lexmark employs copyrighted computer programs embedded within microchips
to control and monitor various operations on the T-series toner cartridges. It utilizes
an authentication sequence to prevent unauthorized access to its Printer Engine and
Toner Loading Program (TLP). In the absence of the authentication sequence, a
printer will not recognize a toner cartridge as being authorized and disables access
to the Printer Engine Program.
Defendant SCC manufactures and sells components for use in the
remanufacturing of toner cartridges. By reverse engineering the Lexmark microchip,
SCC developed a microchip that copies, and thereby circumvents, the authentication
sequence that Lexmark uses in the T-Series printers. This enables SCC to sell its
“SMARTEK” microchip for use by third-parties to market replacement toner
cartridges that are compatible with the T-series despite Lexmark’s intention to limit
replacement cartridges to those it manufactures.
U.S. District Court. Lexmark sued SCC in U.S. district court and received a
preliminary injunction against the continuing sale by SCC of the “SMARTEK”

12 Assessment Technologies of WI v. Wiredata, Inc., 350 F.3d 640, 647 (7th Cir. 2003).
13 See Dan L. Burk, Anticircumvention Misuse, 50 U.C.L.A. L. REV. 1095, 1135 (2003). The
author advocates development of a judicial doctrine of “anticircumvention misuse,” akin to
copyright misuse, to curb anticompetitive applications of access-control technology. “[A]
finding of misuse would be proper where the ends to which the anticircumvention right is
put exceed the reasonable grant of the right. For this standard to have any definite structure
it will be necessary to determine what the bounds of the anticircumvention grant might be.”

microchip for T-series replacement cartridges. The court found that Lexmark was
likely to prevail on claims of copyright infringement and violation of the DMCA.14
There were two distinct components of SCC’s microchip. One circumvented
an authentication sequence embedded in the T-series printer. The sequence
determines whether the printer will accept the cartridge as authorized and
subsequently grant it access to the Printer Engine Program which is resident in the
printer’s controller board. The other both circumvented access to and copied
Lexmark’s TLP in its entirety. The Toner Loading Program enables the printers to
approximate the amount of toner remaining in the cartridge. This information is used
to display a “toner low” message on the printer screen.
The question before the court was twofold: First, did the SMARTEK microchip
violate the DMCA by illegally circumventing the access control systems to both the
Printer Engine Program and the Toner Loading Program? Second, by replicating the
TLP in its entirety, did the microchip infringe Lexmark’s copyright in it? The court
considered in depth whether the Lexmark’s Toner Program was copyrightable and
concluded that it was, relying in part upon the fact that the U.S. Copyright Office
granted Lexmark of a Certificate of Registration for it. It considered and rejected a
fair use defense. It also rejected a copyright misuse defense, finding that attempting
to enforce rights under the DMCA to protect access to a copyrighted computer
program cannot have the legal effect of “using copyright to secure an exclusive right
or limited monopoly not expressly granted by copyright law.”15
Nor could Lexmark’s efforts to enforce its rights under the DMCA be
considered an unlawful act undertaken to stifle competition. The court emphasized
that under the DMCA, “the right to protect against unauthorized access is a right
separate and distinct from the right to protect against violations of exclusive
copyright rights such as reproduction and distribution.”16 Indeed, the authentication
sequence which triggered the interface between Lexmark’s toner cartridge microchip
and printer was exactly the type of “technological measure that effectively controls
access to a work” designed to be protected under the DMCA.17
Finally, the court rejected the argument that the DMCA’s exemption for reverse
engineering was applicable to SCC’s SMARTEK microchip.18 In addition to

14 253 F.Supp.2d 943 (E.D.Ky. 2003), rev’d, 387 F.3d 522 (6th Cir. 2004).
15 See also Sony Computer Entertainment America. Inc. v. Gamemasters, 87 F.Supp.2d 976
(N.D.Ca. 1999)(no copyright misuse where plaintiff sued to prevent defendant from selling
counterfeit accessories which circumvented access controls on plaintiff’s game console and
16 253 F.Supp.2d at 969.
17 Id. at 967.
18 Sections 1201(f)(2) and (3) provide that a person may develop a circumvention device
and make that circumvention device available to others “solely for the purpose of enabling
interoperability of an independently created computer program with other programs, and
to the extent that doing so does not constitute infringement under this title or violate

violating the DMCA by circumventing the authentication sequence to the Printer
Engine Program, SCC’s microchip infringed the Copyright Act because it contained
an exact copy of Lexmark’s copyrighted Toner Loading Program. Therefore, SCC
was unable to meet the reverse engineering exemption requirement that the
circumvention enables interoperability of an independently created computer
The Court of Appeals. The Sixth Circuit Court of Appeals overturned the
lower court’s issuance of a preliminary injunction, taking issue with virtually all of
the district court’s findings.19 Specifically, the Court of Appeals found that, for
purposes of upholding a preliminary injunction, Lexmark was not likely to
successfully establish that SCC infringed its copyright for the TLP or that the
SMARTEK microchip violated the DMCA by illegally circumventing access
The court first considered the TLP’s eligibility for copyright protection. It
weighed the basic element for copyrightability, original and/or creative expression,
against that which cannot be copyrighted – an idea, procedure, process, system,
method of operation, concept, principle or discovery, regardless of form.20 Applying
this process to computer programs with its concomitant task of separating idea from
expression is “vexing.”21 In order to ascertain the “elusive boundary line” between
idea/expression and between process/non-functional expression, the court utilized the
doctrines of “merger” and “scènes à faire.” The merger doctrine precludes copyright
protection where there is only one way or very few ways of expressing an idea. Idea
and expression are deemed to be merged because granting copyright to the expressive
component of the work would extend protection to the work’s uncopyrightable ideas
as well. The scènes à faire doctrine is related. In the computer-software context it
that the elements of a program dictated by practical realities--e.g., by hardware
standards and mechanical specifications, software standards and compatibility
requirements, computer manufacturer design standards, target industry practices,
and standard computer programming practices--may not obtain [copyright]22
The court noted that lock-out codes generally fall on the functional-idea rather
than the original-expression side of the copyright line. Manufacturers of
interoperable devices such as toner cartridges or garage door opener transmitters
often employ a security system to bar the use of unauthorized components. To
unlock the system to permit operation of the primary device, the printer or the garage
door opener, the component must contain certain code or be engineered to respond

18 (...continued)
applicable law other than this section.” 17 U.S.C. § 1201(f)(3) (emphasis added).
19 387 F.3d 522 (6th Cir. 2004).
20 17 U.S.C. § 102(b).
21 387 F.3d at 535.
22 Id.

correctly to an authentication sequence. When a code sequence must be included in
a component device to permit its use, the merger and scènes à faire doctrines often
preclude the sequence from obtaining copyright protection.
Applying the foregoing, the court concluded that the district court erred in
finding that the TLP code had sufficient originality to be copyrightable. It found the
TLP to be a very brief, uncomplicated code sequence that functioned as a lock out
code. Brevity in a computer program does not make it ineligible for copyright
protection, but creativity and effort are reciprocally related: the smaller the effort, the
greater the creativity required to invoke copyright protection.23
In view of its finding that the TLP was not copyrightable, the court declined to
rule on SCC’s fair use defense. It did, however, indicate that although the purpose
of SCC’s use of the SMARTEK chip was for commercial gain, a factor in a fair use
analysis, its use of the copyrighted TLP on the chip was not. Rather, the use of the
TLP was to satisfy authentication requirements and to permit printer functionality.
Likewise, with respect to the allegedly infringing use on the value of the copyrighted
work, the lower court had concluded that the SMARTEK chip would diminish the
market for sales of Lexmark’s toner cartridges. The proper and more narrow
question, however, was whether replication of the TLP on the microchip would
diminish demand for the TLP. More significantly, the Court of Appeals observed
that copyright law is not properly invoked to protect a secondary market in consumer
[T]he district court focused on the wrong market: it focused not on the value or
marketability of the Toner Loading Program, but on Lexmark's market for its
toner cartridges. Lexmark's market for its toner cartridges and the profitability
of its Prebate program may well be diminished by the SMARTEK chip, but that
is not the sort of market or value that copyright law protects. ... Lexmark has not
introduced any evidence showing that an independent market exists for a
program as elementary as its Toner Loading Program, and we doubt at any rate24
that the SMARTEK chip could have displaced any value in this market.
The Court of Appeals then addressed the district court’s findings with respect
to Lexmark’s likelihood of success in establishing that SCC violated the DMCA’s
ban on distributing devices that circumvent access-control measures placed on
copyrighted works. According to Lexmark, SCC's SMARTEK chip is a “device”
that “circumvents” Lexmark’s “technological measure,” i.e., the authentication
sequence, which “effectively controls access” to its copyrighted works (the Toner
Loading Program and Printer Engine Program). Lexmark claimed that the
SMARTEK chip met all three tests for liability under § 1201(a)(2): (1) the chip was
“primarily designed or produced for the purpose of circumventing” Lexmark’s
authentication sequence, (2) it had “only limited commercially significant purpose
or use other than to circumvent” the authentication sequence; and (3) SCC marketed
the chip “for use in circumventing” the authentication sequence. The district court

23 Id. at 543.
24 Id. at 545. (Citation omitted; emphasis in original.)

agreed and concluded that Lexmark had shown a likelihood of success under all three
For the Court of Appeals, the anticircumvention allegation with respect to the
TLP was problematic. The microchip did not provide “access” to the TLP but
actually replaced it. More important, since the DMCA prohibits circumvention of
access controls for copyrighted work, the determination that the TLP was not
eligible for copyright protection mooted the DMCA charge.
The charge of illegal circumvention of the authentication sequence for the
copyrighted Printer Engine Program was more complicated. The district court
determined that the authentication sequence “controlled access” to the Printer Engine
Program because it controlled the consumer’s “ability to make use of” the program.
The Court of Appeals disagreed, asserting that the authentication sequence did not
control access, rather “[i]t is the purchase of a Lexmark printer that allows <access’
to the program.”25 The literal code itself can be read directly from the printer
memory without the benefit of the authentication sequence. There is no security
device protecting the Printer Engine Program. While the authentication sequence
controls access to the Printer Engine Program’s functionality, the Program itself is
not otherwise effectively protected by access controls; the data and program can be
translated into readable source code. Hence, the authentication sequence controlled
only one avenue of access – operational compatibility with a printer cartridge.
Analogizing access controls to locks on a house, the court reasoned:
Because the statute refers to “control[ling] access to a work protected under this
title,” it does not naturally apply when the “work protected under this title” is
otherwise accessible. Just as one would not say that a lock on the back door of
a house “controls access” to a house whose front door does not contain a lock
and just as one would not say that a lock on any door of a house “controls
access” to the house after its purchaser receives the key to the lock, it does not
make sense to say that this provision of the DMCA applies to otherwise-readily-26
accessible copyrighted works.
The court elaborated by explaining why access to the Printer Engine Program
is not covered by the DMCA. In the setting where the DMCA applies, such as
encrypted data on music CDs and motion-picture DVDs, the copyright content that
it protects operates on “two planes”: the literal code governing the content and its
manifestation generated by the code’s execution, namely, the music or movie. In the
DMCA’s context, restricting “use” of the work means “restricting consumers from
making use of the copyrightable expression in the work.”27 The manufacturer must
prevent access to both planes of the copyrighted material and the alleged infringer
responds by marketing a device that circumvents both levels of protection. Thus,
because Lexmark did not direct any of its security efforts, through the authentication
sequence or otherwise, to ensuring that the Printer Engine Program could not be read

25 Id. at 546.
26 Id. at 547.
27 Id. at 548.

and copied, “it cannot lay claim to having put in place a <technological measure that
effectively controls access to a work protected under [the copyright statute].’”
The extent to which the court leaves open an invitation to manufacturers to
come within the DMCA by withholding all levels of access to copyright-protected
code is less clear. It refers to the act’s legislative history and discerns congressional
intent to protect the market for interoperable consumer goods, but nevertheless
emphasizes its “two plane” analysis:
Nowhere in its deliberations over the DMCA did Congress express an interest in
creating liability for the circumvention of technological measures designed to
prevent consumers from using consumer goods while leaving the copyrightable
content of a work unprotected. In fact, Congress added the interoperability
provision in part to ensure that the DMCA would not diminish the benefit to
consumers of interoperable devices “in the consumer electronics environment.”28

144 Cong. Rec. E2136 (daily ed. Oct. 13, 1998) (remarks of Rep. Bliley).

Interestingly, in a concurring opinion, Circuit Judge Merritt addresses this very
point. He advocates broadening the scope of the holding by making clear “that in the
future companies like Lexmark cannot use the DMCA in conjunction with copyright
law to create monopolies of manufactured goods for themselves just by tweaking the
facts of this case: by, for example, creating a Toner Loading Program that is more
complex and <creative’ than the one here, or by cutting off other access to the Printer29
Engine Program.”
In his opinion, the critical question is the purpose of the circumvention
technology. Because the purpose of the law is to prohibit piracy of copyright
protected works such as movies, music, and computer programs, an
anticircumvention claim should not be permitted to go forward unless the plaintiff
can demonstrate that the circumvention supports piracy. A broad reading of the
statute is necessary, he argues, to prevent manufacturers from creating monopolies
for durable goods such as replacement parts through the use of more elaborate lock
out codes. And the burden of proof to demonstrate piracy must be on the plaintiff in
order to prevent the threat of litigation by powerful manufacturers against smaller
rivals and thereby thwart development of devices that facilitate legitimate access to
consumer goods. Only then should the burden of proof shift to the defendant to
invoke a statutory exception, such as the reverse engineering exception.
Chamberlain Group, Inc. v. Skylink Technologies, Inc. In three
reported decisions, a U.S. district court and the Court of Appeals for the Federal
Circuit considered the claim of plaintiff Chamberlain, a garage door opener (GDO)
manufacturer, that defendant Skylink’s universal remote control GDO transmitter
violated the DMCA. Chamberlain manufactures and sells a variety of GDO systems.
Its “Security+” line incorporates a copyrighted computer program known as its
“rolling code” system to transmit changing signals. The rolling code system is
designed to enhance the security of its GDO by preventing “code grabbers” from

28 Id. at 549.
29 Id. at 551.

intercepting the GDO signal. Skylink markets a universal remote transmitter, Model
39, which functions with a wide variety of GDOs. It does not incorporate
Chamberlain’s rolling code, but has one specific setting that operates the rolling code
GDO. Chamberlain sued Skylink, asserting that the Model 39 transmitter is
marketed for use in circumventing its rolling code computer program and that it
renders the Security+ GDO insecure by allowing unauthorized users to circumvent
the security inherent in the rolling code. Consequently, Chamberlain contended that
Skylink violated the anti-trafficking clause of the DMCA’s anticircumvention
provision, § 1201(a)(2).
U.S. District Court Holdings. In the first of two reported U.S. district court
decisions, the court considered whether Chamberlain’s rolling code security system
was protected by copyright and whether the DMCA applied.30 The court in denying
Chamberlain’s motion for summary judgment established a framework for its
anticircumvention analysis, noting that it is “undisputed” that the DMCA’s
application is not limited to the Internet.31 It was specifically intended to prohibit
the trafficking of products or devices that circumvent technological measures to
restrict access to copyrighted work.
In the second opinion,32 the court granted defendant Skylink’s motion for
summary judgment determining that the Model 39 transmitter did not provide
unauthorized access to Chamberlain’s copyrighted software. Skylink’s program to
overcome Chamberlain’s rolling code did not satisfy the statutory definition of
circumvention without the authority of the copyright owner.33 The court did not
require Skylink to prove that its use was authorized. Rather, the burden was on
Chamberlain to demonstrate that the use was unauthorized. The court found the
following criteria persuasive to support its conclusion that Skylink’s use of the
rolling code was authorized:
!Chamberlain did not put any restrictions on consumers regarding the
type of transmitter they needed buy to operate its GDO;
!Chamberlain also marketed a universal transmitter and did not
advise consumers that they were limited to purchasing replacements
from Chamberlain; and
!In order for a Skylink transmitter to operate a Chamberlain GDO, the
homeowner must store the transmitter’s signal into the GDO’s

30 Chamberlain Group, Inc. v. Skylink Technologies, Inc., 292 F.Supp.2d 1023 (N.D.Ill.

2003) (Chamberlain I).

31 Id. at 1035.
32 Chamberlain Group, Inc. v. Skylink Technologies, Inc., 292 F.Supp.2d 1040 (N.D.Ill.

2003) (Chamberlain II), aff’d 381 F.3d 1178 (Fed. Cir. 2004).

33 17 U.S.C. § 1201(a)(3)(A) provides that to circumvent a technological measure “means
to descramble a scrambled work, to decrypt an encrypted work, or otherwise to avoid, by-
pass, remove, deactivate, or impair a technological measure, without the authority of the
copyright owner[.]”

memory. Hence, it is the consumer, not Skylink, that authorizes
Skylink’s Model 39 universal GDO transmitter did not violate the statute
because creating and marketing one that is interoperable with the Chamberlain GDO
was implicitly authorized.
The court emphasized two factors: homeowner expectations and industry
practice. In response to Chamberlain’s argument that it never warned customers
against using unauthorized transmitters because it had no idea that other transmitters
could be made to operate its rolling code, the court replied that Chamberlain’s failure
to anticipate new technology “does not refute the fact that homeowners have a
reasonable expectation of using the technology now that it is available.”34 The fact
that there is “a history in the GDO industry of universal transmitters being marketed
and sold to allow homeowners an alternative means to access any brand of GDO”
negated Chamberlain’s contention that there was an implied restriction against the
use of competing transmitters.35
The court compared the absence of an explicit limitation by Chamberlain on the
use of competing transmitters to Lexmark’s explicit restrictions against use of third-
party toner cartridge refills in its shrinkwrap agreement with consumers. Yet, while
simultaneously acknowledging the limitations that may be effected by a shrinkwrap
agreement, the court also suggested that “legitimate consumer expectations” may
constitute an independent “fair use” basis for circumventing access control
[A] homeowner has a legitimate expectation that he or she will be able to access
the garage even if the original transmitter is misplaced or malfunctions. .... Under
Chamberlain's theory, any customer who loses his or her Chamberlain
transmitter, but manages to operate the opener either with a non-Chamberlain
transmitter or by some other means of circumventing the rolling code, has
violated the DMCA. In this court's view, the statute does not require such a
conclusion. GDO transmitters are similar to television remote controls in that
consumers of both products may need to replace them at some point due to
damage or loss, and may program them to work with other devices manufactured
by different companies. In both cases, consumers have a reasonable expectation
that they can replace the original product with a competing, universal product36
without violating federal law.
The court assigned significant weight to two factors in issuing the summary
judgment in favor of Skylink. First, that the process by which the Model 39
transmitter passed Chamberlain’s rolling code was not created without authorization
and, second, that the burden of proof to demonstrate the absence of authorization is
on the party alleging violation of the anticircumvention statute. It therefore rejected
Chamberlain’s contention that Skylink violated the prima facie requirement of anti-

34 292 F.Supp.2d at 1044.
35 Id. at 1045.
36 Id. at 1046.

trafficking under § 1201(a)(2) because its transmitter bypasses Chamberlain’s rolling
code security measure to gain access to Chamberlain’s copyrighted GDO receiver
operating software.
Court of Appeals. The Court of Appeals noted that to determine whether
Skylink was entitled to summary judgment on the grounds that its Model 39 universal
transmitter does not violate the DMCA requires the statutory construction of what §
1201(a)(2) does prohibit, a matter of “first impression.”37 It reviewed proceedings
before the lower court, emphasizing the significance of the fact that Chamberlain did
not allege that Skylink had infringed its copyright or was liable for contributory
copyright infringement. And, with respect to the question of unauthorized
circumvention, the court reiterated that the homeowner who purchases a Chamberlain
GDO owns it and has a right to access his or her garage with it. Chamberlain did not
place any explicit terms or conditions to limit the ways a purchaser may use its
products. The homeowner who wishes to use a Skylink transmitter to operate with
the Chamberlain GDO must program it to do so. Hence, if Chamberlain’s
interpretation of the DMCA were correct, not only would Skylink be in violation of
the DMCA for trafficking in circumvention devices under § 1201(a)(2), but owners
of a Chamberlain GDO who purchased a Skylink transmitter would be in violation
of (a)(1) which prohibits circumvention.38
But the Court of Appeals, departing from the lower court’s analysis, undertook
a more expansive interpretation of the anticircumvention statute and did not limit its
examination to the question of “authorization” as a component of the statutory
definition of circumvention. It began by examining the “essence”of § 1201 which,
it found, does not create a new property right. Circumvention is not legally
synonymous with infringement:
This distinction between property and liability is critical. Whereas copyrights,
like patents, are property, liability protection from unauthorized circumvention
merely creates a new cause of action under which a defendant may be liable. The
distinction between property and liability goes straight to the issue of
authorization, the issue upon which the District Court both denied Chamberlain's39
and granted Skylink's motion for summary judgment.
The distinction is evident in the basis for stating the claim. A plaintiff alleging
copyright infringement need only prove ownership and copying to make a claim. The
burden of proving that the use was authorized falls on the defendant. But a plaintiff
alleging illegal circumvention or trafficking must prove that the defendant’s access
was unauthorized, a significant burden of proof which requires the plaintiff to
establish that copyright law does not permit the access. Only then does the burden
shift to the defendant.

37 381 F.3d 1178, 1185, 1191 (Fed. Cir. 2004). The court distinguished the case before it
from Universal City Studios v. Corley, 273 F.3d 429 (2d Cir. 2001), which focused on First
Amendment issues in relation to the DMCA’s anticircumvention provisions.
38 381 F.3d at 1187.
39 Id. at 1192-93.

The court rejected Chamberlain’s argument that enactment of the DMCA
renders pre-DMCA history in the GDO industry “irrelevant” and overrides pre-
existing consumer expectations about the legitimate uses of products containing
copyrighted-embedded software. It rejected the broader contention that, in the
absence of explicit authorization, circumvention of any technological access control
measure to use a product containing copyrighted software is per se illegal. To
subscribe to such an interpretation of the statute would grant manufacturers “broad
exemptions from both the antitrust laws and the doctrine of copyright misuse.”40
In other words, the DMCA’s prohibition against circumvention does create a
new and independent cause of action separate from copyright infringement.41 But in
order to establish liability for unauthorized circumvention, the complainant must
demonstrate that access is indeed linked to copyright infringement. And this linkage
allows the court to consider all non-infringing uses, including statutorily and
judicially established fair uses. Hence, to violate the DMCA by circumventing
access technology “without the authority of the copyright owner” means to
circumvent for a purpose impermissible under the copyright laws; not simply to
circumvent without the express permission of the copyright owner.42
The court examined § 1201’s construction and legislative history and
determined that the key to disentangling these relationships lies in understanding the
linkage between “access” and “protection.” Tying prohibitions against access to
protectible rights under copyright law represents a “rebalancing of interests” that
addresses digital piracy. Granting copyright owners unqualified control over
technological access would create “two distinct copyright regimes.” The first regime
permits copyright owners to protect only the rights enumerated in 17 U.S.C. § 106,
subject to the exceptions and limitations of the Copyright Act. Owners who attempt
to protect their rights by incorporating technological measures to protect against
encroachment are able to hold traffickers in circumvention devices liable under §

1201(b) for putting their rights at risk by enabling users of the devices to infringe.

Under the second regime – inherent in Chamberlain’s argument and rejected
by the court – the owners of a work protected by both copyright and a technological
measure that controls access to that work would possess unlimited rights to hold
circumventors liable under 1201(a) simply for accessing that work, even if that
access enabled only rights that the Copyright Act grants to the public. This
interpretation, even under the “substantial deference due Congress ... borders on the

40 Id. at 1193.
41 “Circumvention is not a new form of infringement but rather a new violation prohibiting
actions or products that facilitate infringement[.]” Id. at 1197.
42 This interpretation, the court noted, helps explain “why Chamberlain’s warranty
conditions and website postings cannot render users of Skylink’s Model 39 <unauthorized’
users for the purposes of establishing trafficking liability under the DMCA.” Id. at 1194.
43 Id. at 1200.

Addressing concerns of many DMCA critics, the court explained that the
doctrines of antitrust and copyright misuse are inescapable components of a right to
control technological access to copyrighted work:
In a similar vein, Chamberlain's proposed construction would allow any
manufacturer of any product to add a single copyrighted sentence or software
fragment to its product, wrap the copyrighted material in a trivial “encryption”
scheme, and thereby gain the right to restrict consumers' rights to use its products
in conjunction with competing products. In other words, Chamberlain's
construction of the DMCA would allow virtually any company to attempt to
leverage its sales into aftermarket monopolies – a practice that both the antitrust44
laws, and the doctrine of copyright misuse normally prohibit.
Indeed, even if the grant to prohibit circumvention were a property right, it would
still not serve to repeal by implication the rights of those who lawfully possess
copyrighted property. If lawful ownership of encryption-protected property conferred
two separate and distinct rights on the copyright holder, the latter would be
empowered to prohibit lawful access to the copyrighted content. In the instant case,
the owner of a Chamberlain GDO has a legal right, that is, a fair use right under
copyright law, to use a universal transmitter manufactured by a third-party to access
the copyrighted software to open the garage door:
Chamberlain's proposed construction would allow copyright owners to prohibit
exclusively fair uses even in the absence of any feared foul use. It would
therefore allow any copyright owner, through a combination of contractual terms
and technological measures, to repeal the fair use doctrine with respect to an
individual copyrighted work – or even selected copies of that copyrighted work.
Again, this implication contradicts § 1201(c)(1) directly. Copyright law itself
authorizes the public to make certain uses of copyrighted materials. Consumers
who purchase a product containing a copy of embedded software have the
inherent legal right to use that copy of the software. What the law authorizes,45
Chamberlain cannot revoke.
While the DMCA granted copyright holders additional legal protection, it did not
rescind the basic bargain granting the public noninfringing and fair uses of
copyrighted materials. The act also permits the various express beneficial uses of
circumvention technology, such as those exempted under § 1201(d),(f),(g), and (j)
from the anticircumvention ban.
The court held that 17 U.S.C. § 1201 prohibits only forms of access that bear a
reasonable relationship to the protections that the Copyright Act otherwise affords
owners. It speculated that its holding might “create some uncertainty and consume
some judicial resources,” but nevertheless concluded that it is the only meaningful
reading of the statute.

44 Id. at 1201. (Citations and footnote omitted.)
45 Id. at 1202. (Footnote omitted)(Emphasis in original).

Building upon its assumptions, the court articulated a very specific test to
determine what a plaintiff alleging a violation of § 1201(a)(2) trafficking must
A plaintiff alleging a violation of § 1201(a)(2) must prove: (1) ownership of a
valid copyright on a work, (2) effectively controlled by a technological measure,
which has been circumvented, (3) that third parties can now access (4) without
authorization, in a manner that (5) infringes or facilitates infringing a right
protected by the Copyright Act, because of a product that (6) the defendant either
(i) designed or produced primarily for circumvention; (ii) made available despite
only limited commercial significance other than circumvention; or (iii) marketed
for use in circumvention of the controlling technological measure. A plaintiff
incapable of establishing any one of elements (1) through (5) will have failed to
prove a prima facie case. A plaintiff capable of proving elements (1) through (5)
need prove only one of (6)(i), (ii), or (iii) to shift the burden back to the
defendant. At that point, the various affirmative defenses enumerated throughout46
§ 1201 become relevant.
A copyright owner seeking to impose liability on an accused trafficker must
demonstrate that the trafficker’s device enables either copyright infringement or a
prohibited circumvention. Here, Chamberlain established no connection between
unauthorized use of its copyrighted software and Skylink’s accused transmitter.
Hence, the court affirmed the district court’s grant of summary judgment to Skylink.
Conclusion. The major challenges presented by both the Lexmark and
Chamberlain cases are to define the relationships between and effects of the
anticircumvention restrictions on reverse engineering, in particular, and underlying
principles of copyright law, in general. These cases represent the application of
anticircumvention principles to access control technology in a broader market of
consumer goods. In both cases, a Court of Appeals read the restrictions on
circumvention more narrowly than the interpretation asserted by the plaintiff, placing
the initial burden on the plaintiff to establish not just the fact of circumvention, but
its wrongfulness as well. In both cases, the courts strove to reconcile existing
copyright law principles of fair use with the newer, independent constraints on
circumvention. While these decisions may allay some of the DMCA’s critics’
concerns regarding anticircumvention and fair use, the facts before the courts ensures
that they cannot define the outer limits for the use of access control technology as a
means to assert control over durable goods.

46 Id. at 1203. (Emphasis in original).