After the recent post on DDB, it seemed useful to share some information about patent ownership law with readers interested. The law of patent ownership in the United States is an interesting mix of state and federal, common law and statute. Here's a brief summary for anyone interested. I haven't checked to see what's happening legislatively at the state level since I wrote this a couple years ago.
Overview of Patent Ownership Law
Unlike some foreign nations, in the United States
only a person may apply for a patent. That person is the inventor or discoverer of what
is claimed in the patent. Thus, the chain of title to any patent in the
United States always begins with an inventor. Because of this disputes over patent ownership logically divide into two
categories. In the first category are
disputes over the origin of the chain of title. Disputes over the origin of the chain of title are usually about whether
a person was properly named or omitted as an inventor, which in turn is a matter
determined by judicial interpretation of federal statutes. In the second category are disputes over transfers
in the chain of title. Disputes over
transfers of patent title sound either in the law of contract or the law of
tort,
and so are almost always a matter of state law. (But note that DDB held that federal can apply when the issue is raised as part of a standing analysis.)
A. Defining Inventorship
Although by statute, applications for patent must be
made by “the inventor,”
the patent statute does not itself specify what acts constitute
inventorship. On the contrary, the
statute adds flexibility to the concept of inventorship by expressly providing
that an invention may be the work of more than one person. Under 35 U.S.C. § 116, two or more persons
may apply for a patent jointly, even when they did not work together physically
or contemporaneously or contribute equally to every invention claimed. In addition, 35 U.S.C. §§ 116 and 256 permit both
the Patent and Trademark Office Commissioner and federal courts to correct
errors in the naming of inventors. The
error of incorrectly naming a person who is not properly an inventor is called
“misjoinder.” The error of incorrectly omitting
the name of a person who is properly an inventor is called “nonjoinder.” The group of persons who are properly named
is called either “the co-inventors” or “the inventive entity.” Inventorship is an important issue in patent
ownership disputes because of the rule in the United States that co-inventors
are co-owners, each capable of granting a license to third parties for use of the
patented invention without the consent of other co-owners.
The act of inventing has been considered “a mental
result” in the United States since at least the 19th century. “The machine, process, or product is
but [a] material reflex and embodiment” of a patentable invention. Recently the Federal Circuit (which has
appellate jurisdiction over almost all patent appeals)
has held that “[c]onception is the touchstone of inventorship, the completion
of the mental part of invention.” The classic definition of conception is “the
formation in the mind of the inventor, of a definite and permanent idea of the
complete and operative invention, as it is [t]hereafter to be applied in
practice.” “Conception is complete only when the idea is
so clearly defined in the inventor’s mind that only ordinary skill would be
necessary to reduce the invention to practice, without extensive research or
experimentation.” But interestingly, the inventor need not know
that her idea will work for conception to be complete. “The discovery that an invention actually
works is part of its reduction to practice.”
In accordance with
these rules, for purposes of joint inventorship, “the qualitative contribution
of each collaborator is the key — each inventor must contribute to the joint
arrival at a definite and permanent idea of the invention.” As a practical matter, joint inventorship is
determined by considering whether a collaborator contributed to the conception
of any claim of the patent. Even a
single claim is enough to confer the status of co-inventor, and hence co-owner.
B. Transfer of Patent
Ownership
The second category of ownership disputes covers all
disputes over patent transfers. But within
the second category, the most common disputes are between an initial owner
(i.e., as we have seen, the inventor) and an initial transferee. Often, the inventor has a pre-existing
relationship with the initial transferee, for example, as a consultant or
employee. When that is the case, the
transfer may form consideration for a pre-existing contract between the
inventor and the transferee, such as a consulting or employment agreement. Federal courts have long held that inventions
may be the subject of transfer prior to patenting, and when such pre-existing
agreements are in place the dispute is no more than a simple claim for breach
of contract. The more interesting case for purposes of
this paper arises when the inventor and initial transferee have a pre-existing
relationship but there is no express contract in place. These are the cases for which a common law of
patent ownership developed in England and the United States.
Before giving a summary of that common law, it will
be useful to say briefly what kinds of transfers may occur. A transfer of patent rights must be either an
assignment or a license. The inventor may make one of three categories
of assignments: first, of the whole patent right, including the exclusive right
to make, use, and sell the invention throughout the United States; second, of
an undivided part or share of that exclusive right; or third, of the exclusive
right under the patent within a particular geographical region. Any transfer that does not fall within one of
these three categories “is a mere license, giving the licensee no title in the
patent, and no right to sue at law in his own name for an infringement.”
Turning back to the common law of patent
ownership, let us assume to begin with that the inventor and initial transferee
have a traditional employee-employer relationship. Even when there is no express
agreement between an inventor and her employer, courts may nonetheless find that
an implied-in-fact contract exists.[19] Three generalized factual scenarios may
obtain when there is no express agreement between an employer and an employee-inventor:
(1) the employee-inventor is employed to do research and development, (2) the
employee-inventor is not employed to do research and development, but is acting
within the scope of her employment or using her employer’s resources, and (3)
the employee-inventor acts outside the scope of his employment and uses her own
resources.
In scenario (1),
courts almost always find the employer to be owner of the invention.[20] “When the purpose for employment … focuses
on invention, the employee has received full compensation for his or her
inventive work.”[21] In scenario (2), the employer may have an
implied-in-law royalty free nontransferable license (also known as a “shop
right”) if the invention was made using employer resources or by an employee
acting within the scope of his employment.[22] The employee, however, retains title to any patent.[23] Employed
inventors do not lose their right to be named inventors simply because they are
employees. In scenario (3), the employee has complete
ownership of the patented invention, and her employer must take a license,[25] or
otherwise pay for whatever rights the employer uses. There is no statutory limit on what the
employee-inventor’s compensation might be in scenario (3), and no compulsory
license to the employer. In general,
when there is an employer-employee relationship, courts have a tendency to
assign the invention to the employer, the rationale being that the employee’s
paycheck is consideration for her inventive work.
The tendency is
reversed, however, when the inventor has taken definite steps toward ending the
employer-employee relationship,
or has specifically reserved intellectual property rights to herself up front. Thus, courts have a tendency to leave ownership
with the inventor when the inventor has left to start a new firm, or was hired only
on a consulting basis.
In concluding this brief overview of patent
ownership law, it is worth noting that in addition to the common law on patent
transfers there are some state and federal statutes that govern transfers of
patent ownership in certain limited circumstances. In particular, there are some states that limit
the enforceable scope of contractual assignments of patent rights from employee
to employer to what would be implied at common law. In other words, in some states an
employee-inventor cannot assign to her employer what her employer would not
otherwise be entitled to at common law. In addition, mirroring the state
statutes that apply restrictions to private contract, there are at least two
federal and several state statutes that apply restrictions on ownership of
inventions by government employees or employees working under government
contract with a particular agency.[29] For example, the statute applicable to the
National Space Program declares that “[w]henever any invention is made in the
performance of any work under any contract of the [National Aeronautics and
Space] Administration” and the employee was either “assigned to perform
research,” or was acting within the scope of employment and using government
resources, “such invention shall be the exclusive property of the United States.”[30]
Last but not least, under the Bayh-Dole Act of 1980, inventors
employed by a not-for-profit organization or small business firm that has
entered into a funding agreement with the federal government are entitled to
separate compensation for inventions made during their employment. Most major universities in the United States, both public and private, now have an
office dedicated to acquiring patent rights for research done at the
university, and with licensing those patent rights for commercial development.
Smith v. Nichols, 88 U.S.112, 118 (1874).
Almost all because in 2002 the Supreme Court ruled that the regional circuits
have jurisdiction over appeals involving patent infringement counterclaims that
would not appear on the face of a well-pleaded complaint. See
Holmes Group, Inc. v. Vornado Air
Circulation Sys., Inc., 535 U.S.826 (2002). For the twenty years between
1982 and 2002 the Federal Circuit’s appellate jurisdiction was entirely
exclusive.
See Ethicon, Inc. v. U.S.Surgical Corp., 135 F.3d 1456, 1460
(Fed. Cir. 1998).
See Waterman
v. Mackenzie, 138 U.S. 252, 255 (1891).
Id. at 407 (citations omitted).
See, e.g., Banner Metals v. Lockwood, 3 Cal. Rptr. 421 (Dist. Ct. App.
1960). Supreme Court precedents include United
States v. Dubilier Condenser Co., 289 U.S. 178, 187 (1933) and Solomons v. United States, 137 U.S.
342, 346 (1890).
See Koehring Co. v. E.D. Etnyre & Co.,
254 F. Supp. 334 (N.D. Ill. 1966).
See, e.g., Lone Star Steel Co. v. Wahl,
636 S.W.2d 217 (Tex. App. 1982); see also
John Mohr & Sons, Inc. v. Jahnke, 198 N.W.2d 363 (Wis. 1972); Jamesbury Co. v. Worcester Valve
Co., 318 F. Supp. 1 (D. Mass. 1970).
Eleven states have passed such statutes, including California,
Delaware, Illinois,
Kansas, Minnesota,
Nevada, North Carolina, North Dakota,
South Dakota, Utah,
and Washington. See
Del. Code Ann. tit. 19, § 805
(West 2003) (enacted 1984); 765
Ill.
Comp. Stat. 1060/2 (West 2004)(enacted 1983);
Kan.
Stat. Ann. § 44-130 (West 2003) (enacted 1981); Minn. Stat. § 181.78 (West
2004) (enacted 1977); Nev. Rev. Stat. § 600.500 (West 2004) (enacted 2001); N.C.
Gen. Stat. §§ 66-57.1 to 66-57.2 (West 2003) (enacted 1981); N.D. Cent. Code §
34-02-11 (West 2003); S.D. Codified Laws § 60-2-10 (West 2003);
Utah Code Ann. § 34-39-1 to 34-39-3 (West
2003) (enacted 1989); Wash. Rev. Code § 49.44.140 (enacted 1979). The North and
South Dakota statutes appear broader, but have been
interpreted to apply the same restraint of contract made express in the other
statutes.
See Keller v. Clark Equipment
Co., 715 F.2d 1280, 1287 (8th Cir. 1983) (interpreting
N.D. statute);
Rural Pennington County Tax Ass’n v. Dier, 515 N.W.2d
841, 846 (S.D. 1994).
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