Clear as Mud: An Empirical Analysis of the Developing Law of Joint Inventorship in the Federal Circuit
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CLEAR AS MUD: AN EMPIRICAL ANALYSIS OF THE
DEVELOPING LAW OF JOINT INVENTORSHIP IN
THE FEDERAL CIRCUIT
Eric Ross Cohen †
Naming the inventors on a patent is more than a formality: Doing so
incorrectly may significantly hinder the patent holder’s ability to enforce his
rights or may render the patent invalid altogether.1 The named inventor
receives much more than recognition; he is the owner of the patent and the
only one who may assert the accompanying property rights against alleged
infringers.2 As such, there are strict requirements in place for who qualifies as
the inventor for a patent.3 When there is clearly only a single, sole inventor,
these issues tend not to cause much confusion beyond priority disputes.4
However, when multiple people work together and produce a “joint
invention,” these rights and restrictions take on new significance. Courts
must frequently analyze and weigh the individual contributions of the
putative inventors and determine whose acts are sufficient for “inventorship”
and whose acts fall short.5 This nuanced and often seemingly arbitrary
© 2013 Eric Ross Cohen.
† J.D. Candidate, 2014, University of California, Berkeley School of Law.
1. See 35 U.S.C. §§ 102(f), 256 (2006); see also infra Section I.C. Except where otherwise
noted, all statutory references are pre- Leahy-Smith America Invents Act, Pub. L. No. 11229, 125 Stat. 284 (2011) [hereinafter “America Invents Act”].
2. This assumes there is no assignment agreement to a third party. 35 U.S.C. § 261
(“[P]atents shall have the attributes of personal property.”); § 262 (“In the absence of any
agreement to the contrary, each of the joint owners of a patent may make, use, offer to sell,
or sell the patented invention . . . without the consent of and without accounting to the
other owners.”); see also W. Fritz Fasse, The Muddy Metaphysics of Joint Inventorship: Cleaning Up
after the 1984 Amendments to 35 U.S.C. § 116, 5 HARV. J.L. & TECH. 153, 156 n.19 (1992)
(“[A]n invention will initially belong to the inventor(s), but there may be an immediate duty
to assign to the employer which is enforceable in court.” (quoting Richard C. Witte & Eric
W. Guttag, Employee Inventions, 71 J. PAT. & TRADEMARK OFF. SOC’Y 467, 469 (1989))).
3. See, e.g., 35 U.S.C. § 101 (requiring “invention” or “discovery”), § 102(g) (requiring
“conception” and “reduction to practice” of invention).
4. See, e.g., Coleman v. Dines, 754 F.2d 353 (Fed. Cir. 1985); Hybritech Inc. v.
Monoclonal Antibodies, Inc., 802 F.2d 1367 (Fed. Cir. 1986).
5. See, e.g., Burroughs Wellcome Co. v. Barr Labs., Inc., 40 F.3d 1223 (Fed. Cir. 1994);
Fina Oil & Chem. Co. v. Ewen, 123 F.3d 1466 (Fed. Cir. 1997); Monsanto Co. v. Kamp, 269
F. Supp. 818 (D.D.C. 1967); Mueller Brass Co. v. Reading Indus., Inc., 352 F. Supp. 1357
(E.D. Pa. 1972).
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384
[Vol. 28:383
BERKELEY TECHNOLOGY LAW JOURNAL
evaluation process has given the law of joint inventorship the reputation of
being “one of the muddiest concepts in the muddy metaphysics of the patent
law.”6 Nevertheless, a clear joint inventorship doctrine is critical both for
institutional researchers as well as entrepreneurs seeking to structure their
operations and business alliances.7 Because most modern research and
development of patentable inventions takes place in institutional settings—
where large teams of people work alongside one another—the commercial
and scientific importance of a predictable joint invention doctrine is of vital
importance to a multitude of modern enterprises.8
This Note will analyze all of the joint inventorship cases that have come
before the United States Court of Appeals for the Federal Circuit since its
inception in 19829 and will describe the evolution of the doctrine over the
past three decades. Specifically, the Note evaluates the court’s jurisprudence
since the 1984 congressional amendment of § 116, which regulated the
naming of multiple inventors and eased the process for listing groups
working on a single patentable idea on the same patent.10 Since the 1984
amendment, the court has decided sixty-five published cases.11 Predictably, in
the vast majority of these cases the court evaluated whether the putative
inventor had made the requisite contribution to the invention in order to
qualify as a joint inventor.12 Even well-reasoned cases, standing alone, tend to
affirm the impression that the law is unclear and unhelpful for practitioners
guiding researchers and institutions because of the highly case-specific nature
of the analysis. However, when read as a unified body of law, the Federal
Circuit’s joint inventorship jurisprudence reveals a cohesive narrative and a
6. Mueller Brass, 352 F. Supp. at 1372.
7. See Lawrence M. Sung, Collegiality and Collaboration in an Age of Exclusivity, 3 DEPAUL
J. HEALTH CARE L. 411, 435–39 (2000) (arguing that the current joint inventorship
jurisprudence discourages collaboration and has caused the scientific community to become
overly “cautious”).
8. Id.; see also Joshua Matt, Searching for an Efficacious Joint Inventorship Standard, 44 B.C. L.
REV. 245, 254 (2002) (discussing the “modern paradigm” of institutional research). Matt
explains that joint inventorship claims have become “an attractive option for disgruntled
scientists suing either their former research partners or former employers. Likewise,
defendants accused of infringement might endeavor to find an unnamed, overlooked and
minor contributor to defeat a claim of infringement.” Id. at 247.
9. Federal Courts Improvement Act of 1982, Pub. L. No. 97-164, 96 Stat. 25.
10. Patent Law Amendments Act of 1984, Pub. L. No. 98-622, § 104(a), 98 Stat. 3383,
3384–85 (amending 35 U.S.C. § 116); see Matt, supra note 8, at 246 (explaining that the
revision to § 116 “lowered the bar for joint inventorship status”); infra Section I.B.
11. See infra Appendix.
12. See generally Aaron X. Fellmeth, Conception and Misconception in Joint Inventorship, 2
N.Y.U. J. INTELL. PROP. & ENT. L. 73 (2012) (describing the difference between
contribution to an individual claim versus the invention as a whole).
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2013] EMPIRICAL ANALYSIS OF JOINT INVENTORSHIP LAW
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set of guiding principles. Ultimately, despite the doctrine’s “muddy”
reputation, this Note describes that a predictable and coherent joint
inventorship doctrine exists in patent law.
Part I of this Note presents an overview of the current state of the law of
joint inventorship with an emphasis on the major doctrinal developments
over the preceding thirty years.13 This Part offers a brief but encyclopedic
grounding in the rules that currently govern § 116 and § 256.14 Part II
presents the results of the empirical analysis.15 This Part describes the
historical development of joint inventorship jurisprudence16 and comes to
three conclusions: in recent years the Federal (...truncated)