Employee Invention Assignment in Iowa

Can an Iowa employer require assignment of every invention?

Because there is no statute on point, the limits come from general principles rather than a legislative carve-out. The only invention-titled chapter in the Iowa Code, chapter 523G (Invention Development Services), is a consumer-protection law regulating contracts between fee-charging invention developers and their customers — where the Iowa legislature has acted on inventions, it has protected inventors as consumers, not regulated what an employment assignment clause may reach. The education-sector provisions are equally far afield: Iowa Code § 262.9(12) lets the Board of Regents, with the inventor's consent, patent or take assignment of inventions of students, instructors, and officials, and § 260C.14(7) is the community-college analogue — consent-based enabling provisions, not private-employment restraints. There is no Iowa analogue to California Labor Code § 2870.

What Iowa supplies instead is a reasonableness framework. In Revere Transducers, Inc. v. Deere & Co., the Iowa Supreme Court analyzed an employee invention-assignment agreement under the same reasonableness inquiry it applies to restrictive covenants A.1.

“The determining factor of whether assignment-of-rights-agreements are enforceable seems to be one of reasonableness.”

The substantive default that Iowa contract law operates against is the federal patent premise restated in Stanford v. Roche: absent an effective assignment, rights in an invention belong to the person who conceived it A.2.

“Since 1790, the patent law has operated on the premise that rights in an invention belong to the inventor.”

The practical consequence is that an Iowa 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 provision is a restraint arising from the employment relationship, and Iowa tests such restraints for reasonableness rather than enforcing them mechanically. There is simply no statutory own-time/own-resource safe harbor for the employee to invoke and no statutory ceiling for the drafter to code around.

Must an Iowa employer notify the employee?

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; Iowa 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 Iowa does not have.

Where Iowa does impose disclosure and assignment duties, they come from the contract, not a statute. In Revere Transducers, Inc. v. Deere & Co., the agreement required employees to disclose inventions in writing during employment and assigned covered inventions to the company, and the Iowa Supreme Court sustained the assignment provision after testing it for reasonableness B.1.

“We further conclude that the invention assignment provision is reasonable and enforceable.”

For a multistate employer the takeaway is the inverse of the notice states: an Iowa 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 Iowa's reasonableness limits, not on any statutory notice or disclosure formality.

Who owns an invention by default in Iowa?

Bandag, Inc. v. Morenings anchors the Iowa default. A tire-recapping company sued its former self-taught chief chemist over a polyurethane bonding formula he developed; there was no written assignment, and the Iowa Supreme Court affirmed dismissal — the employee owned the invention. The court explained why it would not lightly read an assignment into the employment relationship C.3.

“Courts are reluctant to infer or imply an agreement by an employee to assign patents to the employer due to a recognition of the peculiar nature of the act of invention.”

The rule the court adopted, quoting Williston on Contracts, is the inventor-owns default C.1.

“In the absence of special agreement to the contrary, an invention and a patent secured for it belong to the inventor, even though the invention was made during the period of his employment, and the invention relates to the matter in which the inventor was employed.”

The same premise anchors the federal overlay. In Stanford v. Roche, the Supreme Court treated the inventor-owns rule as the baseline against which any assignment is measured C.4.

“Since 1790, the patent law has operated on the premise that rights in an invention belong to the inventor.”

The principal exception is the employee hired to invent. Under United States v. Dubilier Condenser Corp. — which Bandag followed — an employee engaged to make a particular invention who succeeds during the term of service must assign the resulting patent to the employer; in Bandag itself the employer failed to prove the chemist was hired to invent, so the exception did not apply C.2.

“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.”

Short of that, where the employee is neither hired to invent nor bound by a written assignment but has used the employer's time, tools, and materials to reach a concrete result, the employer's remedy under the Dubilier framework is only an equitable shop right — a non-exclusive license to use the invention, not ownership of it. Bandag discussed the shop-right doctrine but the issue was not pleaded, and no Iowa appellate decision found in our review has squarely awarded one. Because ownership therefore starts with the inventor and Iowa has no statute filling the gap, the dependable path for an employer is a written present-assignment (hereby assigns) clause that transfers legal title automatically on conception, rather than a future promise to assign that leaves the employer with a mere equitable claim.

Are trailing-assignment (holdover) clauses enforceable in Iowa?

Revere Transducers, Inc. v. Deere & Co. is the assignment-specific authority. The agreement there required written disclosure of inventions during employment, imposed a one-year post-termination nondisclosure obligation covering inventions related to the company's methods, processes, and goods, and assigned covered inventions to the company in the present tense. The Iowa Supreme Court did not treat those provisions as ordinary contract terms to be enforced mechanically; it asked whether they were reasonable D.1.

“The determining factor of whether assignment-of-rights-agreements are enforceable seems to be one of reasonableness.”

The content of that inquiry is Iowa's established three-prong restrictive-covenant test, which Revere recited from the state's noncompete line (Lamp v. American Prosthetics and Iowa Glass Depot v. Jindrich) and applied to the invention provisions D.2.

“(1) Is the restriction reasonably necessary for the protection of the employer’s business; (2) is it unreasonably restrictive of the employee’s rights; and (3) is it prejudicial to the public interest?”

The scope gap matters. The assignment upheld in Revere covered inventions made during the period of employment; the only trailing component was the one-year post-termination nondisclosure of inventions, not an assignment of inventions conceived after the employee left. So a true holdover assignment — a clause claiming ownership of what a former employee invents after departure — has never been adjudicated by an Iowa appellate court in our review. What Revere does establish is the framework such a clause would face: the court drew its reasonableness rule for assignment agreements from the New Jersey Supreme Court's Ingersoll-Rand Co. v. Ciavatta, the leading out-of-state holdover-clause decision, which is nonbinding in Iowa but indicates the analysis an Iowa court would likely apply.

That analysis has a public-policy ceiling. Iowa's covenant cases hold that an employer cannot use a restraint to capture the general professional capital an employee builds on the job, and an aggressive holdover clause that functions as a restraint on the former employee's ability to work would collide with that rule D.3.

“An employee cannot be precluded from exercising the skill and general knowledge he has acquired or increased through experience or even instruction while in the employment.”

The risk-weighted reading: a modest trailing clause — short, tied to inventions derived from the employer's confidential information or the employee's work for the employer — is probably enforceable in Iowa, because the Iowa Supreme Court has already blessed a one-year trailing invention restraint under the reasonableness test. An open-ended clause sweeping in everything a former employee invents is at meaningful risk under the same test, and the precise standard for holdover assignments remains undecided.