Can an Oregon employer require assignment of every invention?
There is no statutory ceiling. Unlike California or Washington, Oregon has no employee-invention-assignment statute — nothing that voids an assignment of a true own-time, own-resource invention — so an assignment clause's reach is bounded only by ordinary contract law, the common-law inventor-owns default, and the federal patent overlay. Oregon's own appellate court states the baseline the clause is drafted against: in a general employment relationship, the employee keeps the patent.
Because there is no statute on point, the limits come from general principles rather than a legislative carve-out. A full-text search of Oregon Revised Statutes chapter 653 (conditions of employment) and chapter 646 (trade practices) surfaces no invention-, patent-, or intellectual-property-assignment provision, and the only intellectual-property provisions our review located elsewhere in the ORS are management powers for public bodies such as community college districts — none is a private-employer assignment regime. An Oregon employer therefore starts from contract law, not a § 2870-style statutory ceiling on what an assignment promise may capture.
The leading Oregon authority is Mainland Industries, Inc. v. Timberland Machines & Engineering Corp., where the Oregon Court of Appeals stated the common-law default that any assignment clause operates against .
(The single-e spelling employe in the quoted Oregon passages is the original reporter style, preserved here.)
That default restates the federal patent premise the Supreme Court reaffirmed in Stanford v. Roche: absent an effective assignment, rights in an invention belong to the person who conceived it .
The practical consequence is that an Oregon employer can, in principle, contract for assignment more broadly than a California or Washington employer, because no statute carves out own-time inventions from the reach of the clause. But that breadth is not unlimited: an assignment clause is still an ordinary contract term, subject to general contract-law defenses, and where a clause operates as a restraint on the employee — most clearly a post-employment tail — Oregon's common-law reasonableness limits on partial restraints of trade come into play, as discussed under the trailing-clause question below. There is simply no statutory own-time safe harbor for the employee to invoke and no statutory ceiling for the drafter to code around.
Sources for this answer
Case law · 1982-08-18
A.1 Mainland Industries, Inc. v. Timberland Machines & Engineering Corp.Mainland Industries states Oregon's common-law default that an employee in a general employment relationship retains any patent the employee procures, even one relating to the employer's product line — the baseline an assignment clause is drafted against.
When the employment relationship is general, an employe is entitled to retain any patent he procures, even though the patent relates to the employer’s product line.
See Mainland Industries, Inc. v. Timberland Machines & Engineering Corp., 58 Or. App. 585, 649 P.2d 613 (Or. Ct. App. 1982).
Case law · 2011-06-06
A.2 Bd. of Trustees of the Leland Stanford Junior Univ. v. Roche Molecular SystemsStanford v. Roche confirms the long-standing premise of U.S. patent law that rights in an invention belong to the inventor, the baseline against which any assignment clause is measured.
Since 1790, the patent law has operated on the premise that rights in an invention belong to the inventor.
See Bd. of Trustees of the Leland Stanford Junior Univ. v. Roche Molecular Sys., Inc., 563 U.S. 776 (2011).
Must an Oregon employer notify the employee?
Not applicable. Because Oregon has no invention-assignment statute, there is no statutory carve-out to notify the employee about and no notice requirement of the kind California imposes under Labor Code § 2872 or Washington imposes under RCW 49.44.140(3). The contrast within Oregon law is instructive: where the legislature wants an advance-notice formality in an employment agreement, it says so — the noncompete statute conditions validity on written notice before employment begins — and it has imposed nothing similar for invention assignments .
There is nothing to give notice of. A notice requirement exists in California and Washington precisely to alert the employee to a statutory own-time carve-out that limits the assignment; Oregon has enacted no such carve-out, so there is no statutory line for a notice to mark. This is why the entry is marked not applicable rather than a bare no: the question presupposes a statutory carve-out that Oregon does not have.
Oregon's legislature plainly knows how to attach a notice formality to an employment covenant when it wants one. ORS 653.295 makes a covered noncompetition agreement void and unenforceable unless, among other conditions, the employer flags it in the written employment offer well before the job starts .
No analogous formality exists for invention-assignment clauses anywhere in the chapter. What Oregon enforces instead is the agreement itself, read against the common-law categories: the duty to assign turns on whether the parties agreed otherwise and on how the employee was engaged, not on any statutory notice or disclosure step .
For a multistate employer the takeaway is the inverse of the notice states: an Oregon employer neither has to give a § 2872-style notice nor can rely on one to cure an overbroad clause. The enforceability of the assignment turns entirely on the contract language and the general limits on restraints, not on any statutory notice or disclosure formality.
Sources for this answer
Primary law
B.1 ORS 653.295ORS 653.295(1)(a)(A) conditions the validity of a covered noncompetition agreement on advance written notice in the employment offer — showing that Oregon attaches notice formalities to employment covenants by express statute, and it has enacted no notice requirement for invention-assignment clauses.
The employer informs the employee in a written employment offer received by the employee at least two weeks before the first day of the employee’s employment that a noncompetition agreement is required as a condition of employment
See Or. Rev. Stat. § 653.295(1)(a)(A) (2025).
Case law · 1982-08-18
B.2 Mainland Industries, Inc. v. Timberland Machines & Engineering Corp.Mainland Industries frames the duty to assign as a function of the parties' agreement and the manner of engagement — absent an agreement to the contrary, ownership follows the common-law categories — so in Oregon disclosure and assignment duties arise from the contract, not from a notice-requiring statute.
Absent an agreement to the contrary, when an employe is hired to invent, or is assigned the responsibility for solving a particular problem, any resulting invention belongs to the employer.
See Mainland Industries, Inc. v. Timberland Machines & Engineering Corp., 58 Or. App. 585, 649 P.2d 613 (Or. Ct. App. 1982).
Who owns an invention by default in Oregon?
The inventor, unless hired to invent. Absent a written assignment, Oregon follows the common-law rule that an employee in a general employment relationship keeps any patent the employee procures — even one relating to the employer's product line — while an employee hired to invent, or assigned a particular problem to solve, must assign the resulting invention to the employer. Where neither applies but the employee used the employer's time and materials, the employer gets only a shop right, a non-assignable license rather than ownership.
Mainland Industries anchors the default. The Oregon Court of Appeals — the highest Oregon court to have addressed employee-invention ownership in the decisions found in our review — stated the rule in terms that leave the invention with the employee unless an exception applies .
The principal exception is the employee hired to invent. In White's Electronics, Inc. v. Teknetics, Inc., the court restated the rule and applied it against an inventor who had been hired precisely because of his exceptional inventive abilities in the metal detector field: he was bound to assign the inventions he completed during his employment even though no written assignment agreement was in force at the time .
Short of hired-to-invent, an employer whose general-capacity employee built the invention on company time gets a shop right, not title. Mainland Industries describes the doctrine as a license, and the court's disposition drives the point home: it vacated a decree that had given the employee's confederate a license in the disputed patent and ordered an accounting and constructive trust instead, because ownership questions turn on these categories, not on who ended up holding the paper .
Both Oregon decisions take this framework directly from United States v. Dubilier Condenser Corp., the Supreme Court decision each opinion cites for the hired-to-invent rule .
Two caveats on precedential weight. First, the leading Oregon cases are Court of Appeals decisions from 1982 and 1984; no Oregon Supreme Court decision on employee-invention ownership was found in our review, so the framework, while stable, has never been ratified by the state's highest court. Second, the case law is patent-focused: no Oregon authority found in our review addresses whether an unwritten default would treat copyright, trade-secret, or other subject matter the same way, which is one more reason the dependable path for an employer is a written present-assignment (hereby assigns) clause that transfers title automatically on conception rather than a future promise to assign.
Sources for this answer
Case law · 1982-08-18
C.1 Mainland Industries, Inc. v. Timberland Machines & Engineering Corp.Mainland Industries holds that when the employment relationship is general, the employee is entitled to retain any patent the employee procures, even one relating to the employer's product line — Oregon's default rule absent a written assignment.
When the employment relationship is general, an employe is entitled to retain any patent he procures, even though the patent relates to the employer’s product line.
See Mainland Industries, Inc. v. Timberland Machines & Engineering Corp., 58 Or. App. 585, 649 P.2d 613 (Or. Ct. App. 1982).
Case law · 1984-02-22
C.2 White's Electronics, Inc. v. Teknetics, Inc.White's Electronics holds that an employee hired to invent who succeeds during the term of service is bound to assign all rights in the invention to the employer, applying the rule to an inventor hired for his inventive abilities even without a written agreement in force.
Absent an agreement to the contrary, an employe who is hired to invent, and who succeeds during his term of service in accomplishing that task, is bound to assign to the employer all rights in the invention.
See White's Electronics, Inc. v. Teknetics, Inc., 67 Or. App. 63, 677 P.2d 68 (Or. Ct. App. 1984).
Case law · 1982-08-18
C.3 Mainland Industries, Inc. v. Timberland Machines & Engineering Corp.Mainland Industries describes Oregon's shop-right doctrine — an employer is granted a non-assignable license, not ownership, when a general-capacity employee creates an invention using the employer's time and materials.
Under that doctrine, an employer is granted a non-assignable license to a patent when an employe who works in a general or non-inventive capacity creates an invention using the employer’s time and materials.
See Mainland Industries, Inc. v. Timberland Machines & Engineering Corp., 58 Or. App. 585, 649 P.2d 613 (Or. Ct. App. 1982).
Case law · 1933-05-08
C.4 United States v. Dubilier Condenser Corp.United States v. Dubilier Condenser Corp. holds that an employee hired to make an invention who succeeds during the term of service is bound to assign the resulting patent to the employer — the rule both Oregon decisions cite as the source of their framework.
One employed to make an invention, who succeeds, during his term of service, in accomplishing that task, is bound to assign to his employer any patent obtained.
See United States v. Dubilier Condenser Corp., 289 U.S. 178 (1933).
Are trailing-assignment (holdover) clauses enforceable in Oregon?
Probably yes if kept to a reasonable tail — but the Oregon authority is thin. The Oregon Court of Appeals has said, in dicta, that employers may protect themselves with contracts capturing inventions conceived during employment and for a reasonable period after termination; the clause in that very case was never enforced, and no Oregon decision found in our review has enforced or struck a trailing-assignment clause on the merits. Because assignment clauses fall outside the noncompete statute's definition, the limit a court would most likely apply is Oregon's common-law reasonableness rule for partial restraints of trade.
The on-point Oregon discussion comes from White's Electronics. The employer there had once obtained a written agreement assigning inventions made during employment and for six months after termination, but the agreement was not revived when the inventor was rehired, and the employer lost the post-employment piece of the case because the concept at issue had not crystallized into an invention before the inventor left. Responding to the employer's policy argument that such a rule would let employed inventors game the timing, the court pointed to holdover contracts as the fix .
That endorsement is dicta, and the opinion itself shows why: the court was explaining what the employer could have contracted for, not enforcing the clause it failed to obtain .
No statute supplies a cap either. ORS 653.295 imposes strict conditions on covered noncompetition agreements, but its definition reaches only a promise not to compete with the employer in providing similar products, processes, or services after termination — an invention-assignment clause promises a transfer of rights, not a forbearance from competing, so it sits outside the statute .
A trailing clause so broad that it operates as a practical bar on working for a competitor could invite an argument that it should be tested under the statute by analogy, but no Oregon authority found in our review addresses that argument either way .
With the statute out of the picture, the governing framework is the common-law reasonableness rule for partial restraints of trade, which the Oregon Supreme Court stated in Eldridge v. Johnston .
Applying that test to an invention holdover is a prediction, not a holding: White's Electronics endorsed a reasonable-period tail without fixing any number, and no Oregon decision found in our review has decided how long is too long. The safe reading is that a short tail tied to inventions conceived or developed during employment is probably enforceable under Oregon's reasonableness framework, while an open-ended or industry-wide trailing assignment is at meaningful risk of being treated as an unreasonable restraint.
Sources for this answer
Case law · 1984-02-22
D.1 White's Electronics, Inc. v. Teknetics, Inc.White's Electronics, answering the employer's policy argument, says in dicta that employers may protect themselves with contracts assigning inventions conceived during employment and during a reasonable period after termination — Oregon's only appellate endorsement of a holdover tail.
Our response is that employers could protect themselves by requiring inventors to enter into contracts that provide that the employer is entitled to any inventions conceived during the term of employment and during a reasonable period of time after termination.
See White's Electronics, Inc. v. Teknetics, Inc., 67 Or. App. 63, 677 P.2d 68 (Or. Ct. App. 1984).
Case law · 1984-02-22
D.4 White's Electronics, Inc. v. Teknetics, Inc.White's Electronics shows the holdover endorsement is dicta — the employer had obtained such an agreement in the first stint of employment but not the second, and that failure was fatal to its post-employment claim, so no holdover clause was enforced.
In fact, White’s required Payne to sign such an agreement during his first period of employment. Its failure to obtain such an agreement the second time around is fatal to its case.
See White's Electronics, Inc. v. Teknetics, Inc., 67 Or. App. 63, 677 P.2d 68 (Or. Ct. App. 1984).
Primary law
D.2 ORS 653.295ORS 653.295(8)(d) defines a noncompetition agreement as a promise not to compete with the employer in providing similar products, processes or services after termination — a definition an invention-assignment clause does not fit, so trailing-assignment clauses sit outside the statute and default to common-law limits.
“Noncompetition agreement” means a written agreement between an employer and employee under which the employee agrees that the employee, either alone or as an employee of another person, will not compete with the employer in providing products, processes or services that are similar to the employer’s products, processes or services for a period of time or within a specified geographic area after termination of employment.
See Or. Rev. Stat. § 653.295(8)(d) (2025).
Case law · 1952-05-28
D.3 Eldridge v. JohnstonEldridge v. Johnston states the Oregon Supreme Court's three-part test for the validity of a partial restraint of trade — partial in time or place, supported by consideration, and reasonable — the framework a court would most likely apply to a post-employment trailing-assignment clause.
Three things are essential to the validity of a contract in restraint of trade: (1) it must be partial or restricted in its operation in respect either to time or place; (2) it must be on some good consideration; and (3) it must be reasonable, that is, it should afford only a fair protection to the interests of the party in whose favor it is made, and must not be so large in its operation as to interfere with the interests of the public.
See Eldridge v. Johnston, 195 Or. 379, 245 P.2d 239 (Or. 1952).
Case law · 1982-08-18
D.5 Mainland Industries, Inc. v. Timberland Machines & Engineering Corp.Mainland Industries holds that in a general employment relationship the employee retains any patent the employee procures, even one relating to the employer's product line — so an Oregon employer's rights are only as good as the written assignment that transfers them.
When the employment relationship is general, an employe is entitled to retain any patent he procures, even though the patent relates to the employer’s product line.
See Mainland Industries, Inc. v. Timberland Machines & Engineering Corp., 58 Or. App. 585, 649 P.2d 613 (Or. Ct. App. 1982).
Do not treat the holdover dicta as settled Oregon law. Ownership starts with the employee in a general employment relationship, so an Oregon employer's rights are only as good as the words that transfer them — use present-assignment (hereby assigns) language and get the agreement signed every time employment begins, because the one Oregon employer to litigate a holdover clause lost precisely for failing to re-obtain the agreement on rehire. Keep any trailing assignment short and tied to inventions conceived or developed during employment: the only Oregon appellate support for a tail is dicta endorsing a reasonable period after termination, with no decision found in our review enforcing one , and an overbroad tail risks being struck as an unreasonable partial restraint under the Oregon Supreme Court's three-part reasonableness test .