# Employee Invention Assignment in Connecticut[^about] Connecticut has no employee-invention-assignment statute — its only invention-ownership statutes govern state employees and public-university employees — so a private-sector assignment clause is bounded by ordinary contract law, the common-law inventor-first default, and restrictive-covenant reasonableness, not a California-style own-time carve-out or notice requirement. The Connecticut Supreme Court has said an employer cannot claim an employee's patented invention absent a contract unless a recognized exception applies, and a trial-level Connecticut decision upheld a two-year trailing-assignment clause under the general reasonableness framework. ## Can a Connecticut employer require assignment of every invention? {#statutory-carve-out} **Short answer.** There is no statutory ceiling. Unlike California or New York, Connecticut has no employee-invention-assignment statute for the private sector — 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-first default, and, for clauses that operate as restraints, Connecticut's restrictive-covenant reasonableness limits. The Connecticut Supreme Court has framed the backdrop the clause operates against: absent a contract provision, the employer cannot claim an employee's patented invention unless a recognized exception applies [^transparent-ruler-contract-required][^stanford-carveout-baseline]. Because there is no statute on point, the limits come from general principles rather than a legislative carve-out. A full-text search of the Connecticut General Statutes employment-regulation chapters (Title 31, Chapters 557 and 558) surfaces no invention-, patent-, or intellectual-property-assignment provision. The invention-ownership statutes Connecticut does have are public-sector only — Conn. Gen. Stat. § 4-61a addresses inventions by state employees, and the Chapter 185b provisions address employees of the public universities — and neither regulates what a private employment contract may require. So a Connecticut employer starts from contract law, not a § 2870-style statutory ceiling on what an assignment promise may capture. The leading Connecticut authority is *Transparent Ruler Co. v. C-Thru Ruler Co.*, in which the Connecticut Supreme Court stated the default rule that governs when there is no contract — and, by implication, why the contract is what does the work [^transparent-ruler-contract-required]. "The rule seems to be settled that if an employee takes out a patent on an invention he has made, the employer cannot claim it, in the absence of a contract provision, unless the work the employee did was within the line of his duties or perhaps on the time and at the expense of the employer, or unless he occupies some peculiar relationship of trust and confidence to the employer."[^transparent-ruler-contract-required] The substantive default that Connecticut 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 [^stanford-carveout-baseline]. "Since 1790, the patent law has operated on the premise that rights in an invention belong to the inventor."[^stanford-carveout-baseline] The practical consequence is that a Connecticut employer can, in principle, contract for assignment more broadly than a California or New York 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 it reaches beyond the employment term it is tested under Connecticut's reasonableness limits on employment restraints, discussed in 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. ## Must a Connecticut employer notify the employee? {#employee-notice} **Short answer.** Not applicable. Because Connecticut has no private-sector 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). What Connecticut enforces instead is contractual: disclosure and assignment duties arise from the terms of the agreement itself, and absent a contract provision the employer cannot claim the invention unless a common-law exception applies [^transparent-ruler-notice]. 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; Connecticut has enacted no such carve-out for private employees, 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 Connecticut does not have. Where Connecticut does impose assignment duties, they come from the contract or from a recognized common-law exception, not from a statute. *Transparent Ruler Co. v. C-Thru Ruler Co.* makes the contract provision the pivot: without one, the employer cannot claim the employee's patented invention unless the work fell within the employee's duties, was done on the employer's time and at its expense, or the employee stood in a special relationship of trust [^transparent-ruler-notice]. "The rule seems to be settled that if an employee takes out a patent on an invention he has made, the employer cannot claim it, in the absence of a contract provision, unless the work the employee did was within the line of his duties or perhaps on the time and at the expense of the employer, or unless he occupies some peculiar relationship of trust and confidence to the employer."[^transparent-ruler-notice] For a multistate employer the takeaway is the inverse of the notice states: a Connecticut 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. ## Who owns an invention by default in Connecticut? {#default-ownership} **Short answer.** The inventor, unless a recognized exception applies. The Connecticut Supreme Court in *Transparent Ruler Co. v. C-Thru Ruler Co.* stated the default directly: an employer cannot claim an employee's patented invention in the absence of a contract provision, unless the work was within the line of the employee's duties, was done on the employer's time and at its expense, or the employee occupied a special relationship of trust and confidence. That inventor-first default tracks the federal patent baseline, and the hired-to-invent exception mirrors the federal rule [^transparent-ruler-default-ownership][^stanford-inventor][^dubilier-hired-to-invent]. *Transparent Ruler* is the clearest Connecticut Supreme Court statement of the default rule our review found. The company's trusted office manager had secretly patented an idea developed in the company's business, and the court ultimately compelled an assignment on the trust-and-confidence facts before it — but it did so only after stating the general rule that starts ownership with the employee [^transparent-ruler-default-ownership]. "The rule seems to be settled that if an employee takes out a patent on an invention he has made, the employer cannot claim it, in the absence of a contract provision, unless the work the employee did was within the line of his duties or perhaps on the time and at the expense of the employer, or unless he occupies some peculiar relationship of trust and confidence to the employer."[^transparent-ruler-default-ownership] Because the case was decided on an exception rather than the default, a hostile reader could discount the rule statement as framing; the safer reading is that it states the settled backdrop the court applied. That backdrop matches the federal premise anchored by *Stanford v. Roche*: rights in an invention belong to the person who conceived it, and an employer's title is derivative of an assignment [^stanford-inventor]. "Since 1790, the patent law has operated on the premise that rights in an invention belong to the inventor."[^stanford-inventor] The line-of-duties exception *Transparent Ruler* recognized corresponds to the federal hired-to-invent rule. Under *United States v. Dubilier Condenser Corp.*, an employee engaged to make a particular invention who succeeds during the term of service must assign the resulting patent to the employer [^dubilier-hired-to-invent]. "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."[^dubilier-hired-to-invent] Short of hired-to-invent, *Transparent Ruler* mentions work done on the employer's time and at its expense only as a possible qualifier, which functions like the shop-right idea in federal common law — an employer that furnished the time and materials may acquire rights in or to use the result, while ownership otherwise stays with the inventor. Because ownership therefore starts with the employee and Connecticut has no statute filling the gap, the dependable path for an employer is a written present-assignment (*hereby assigns*) clause that transfers title automatically on conception, rather than a bare promise to assign or reliance on the fact-bound trust-and-confidence exception that *Transparent Ruler* itself turned on. ## Are trailing-assignment (holdover) clauses enforceable in Connecticut? {#holdover-clause-limit} **Short answer.** Probably yes, if reasonable. Connecticut has no statute capping post-employment trailing assignments, and the one Connecticut decision our review found squarely on point — a 1944 Superior Court ruling — upheld a clause requiring disclosure and assignment of inventions made during employment and for two years afterward, stressing the two-year limit and the protection of the employer's trade secrets. Because that ruling is trial-level and no Connecticut appellate holding squarely addresses holdover clauses, the prediction is that a court would test such a clause under Connecticut's general restrictive-covenant reasonableness framework rather than any fixed numeric ceiling [^murray-two-year-upheld][^scott-reasonableness-test]. The general framework is settled. In *Scott v. General Iron & Welding Co.*, the Connecticut Supreme Court stated the governing test for employment restraints [^scott-reasonableness-test]. "In determining whether a restrictive covenant of employment is in restraint of trade, ‘[t]he test of its validity is the reasonableness of the restraint it imposes.’"[^scott-reasonableness-test] *Scott* also carries forward the older fair-protection formulation for post-termination restrictions, which supplies the measure a holdover clause would have to satisfy [^scott-fair-protection]. "In order to be valid and binding, a covenant which restricts the activities of an employee following the termination of his employment must be partial and restricted in its operation ‘in respect either to time or place, . . . and must be reasonable — that is, it should afford only a fair protection to the interest 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."[^scott-fair-protection] The invention-specific application comes from *Murray v. A. F. Holden Co.*, a 1944 Superior Court declaratory-judgment action attacking a clause that required the employee to disclose and assign any invention made during employment and for two years afterward that related to the employer's products and processes. The court treated the two-year limit and the trade-secret purpose as what saved the clause [^murray-two-year-upheld]. "The enforcement of a restrictive contract which involves no limitation as to time or space presents a very different question from that which arises in the instant case where there is a reasonable limitation of two years, involving also a contract for the protection of trade secrets and secret processes used by the employer."[^murray-two-year-upheld] The court then upheld the agreement outright [^murray-upheld-holding]. "I am constrained to find that the contract, Exhibit A, is reasonable, valid and enforceable."[^murray-upheld-holding] *Murray* is trial-level and old, so its value is predictive rather than binding — but it is Connecticut law applying Connecticut reasonableness principles to exactly this clause type, and it forecloses any assumption that Connecticut caps holdover clauses at one year: the clause it upheld ran two. Federal authority in the district is consistent in direction but not Connecticut law: *Universal Winding Co. v. Clarke* upheld a one-year holdover clause as not an unreasonable restraint, but the court expressly applied Rhode Island law under choice-of-law rules, so it is persuasive non-Connecticut authority at most [^universal-winding-persuasive]. Beyond these decisions, our review found no Connecticut appellate holding squarely deciding the enforceability of a trailing invention-assignment clause and no authority imposing a fixed durational cap. The supportable reading is that a Connecticut court would apply the *Scott* reasonableness framework by analogy — asking whether the clause affords only fair protection to the employer's interests in its trade secrets and confidential processes without unduly burdening the former employee or the public — and that a clause with a modest term tied to those interests stands on the strongest available footing. > [!NOTE] > **Practice note.** > > Do not treat Connecticut's permissiveness on holdover clauses as settled appellate law. The one Connecticut decision squarely upholding a trailing invention-assignment clause is a 1944 Superior Court ruling — trial-level and never squarely confirmed by a Connecticut appellate court in our review — so enforcement of a two-year or longer holdover remains a prediction under the general reasonableness framework rather than a guaranteed outcome [^murray-two-year-upheld]. Keep any trailing clause modest in duration and tied to the employer's trade secrets and confidential processes, because those were the features the *Murray* court relied on, and expect a court to ask whether the clause affords only fair protection to the employer without operating so broadly that it interferes with the former employee's livelihood or the interests of the public [^scott-fair-protection]. And because ownership starts with the inventor, draft with present-assignment (*hereby assigns*) language so title passes automatically on conception — an employer's rights are only as good as the words that transfer them [^stanford-traceback-practice]. [^about]: By Steven Obiajulu, J.D. Published by [openagreements.org](https://openagreements.org). Last reviewed 2026-07-02. License: CC BY 4.0. Steven Obiajulu, J.D. is admitted in New York, not Connecticut. This article synthesizes Connecticut primary law and is not legal advice from a Connecticut-admitted attorney. This article is for informational purposes only and does not create an attorney-client relationship. CC BY 4.0. Cite as Steven Obiajulu, *Employee Invention Assignment in Connecticut*, OpenAgreements (last updated July 2, 2026), https://openagreements.org/practice-guides/invention-assignment/us/connecticut. [^transparent-ruler-contract-required]: **Transparent Ruler Co. v. C-Thru Ruler Co.** — "The rule seems to be settled that if an employee takes out a patent on an invention he has made, the employer cannot claim it, in the absence of a contract provision, unless the work the employee did was within the line of his duties or perhaps on the time and at the expense of the employer, or unless he occupies some peculiar relationship of trust and confidence to the employer." *Transparent Ruler Co. v. C-Thru Ruler Co., 129 Conn. 369, 28 A.2d 232 (1942).* [^stanford-carveout-baseline]: **Bd. of Trustees of the Leland Stanford Junior Univ. v. Roche Molecular Systems** — "Since 1790, the patent law has operated on the premise that rights in an invention belong to the inventor." *Bd. of Trustees of the Leland Stanford Junior Univ. v. Roche Molecular Sys., Inc., 563 U.S. 776 (2011).* [^transparent-ruler-notice]: **Transparent Ruler Co. v. C-Thru Ruler Co.** — "The rule seems to be settled that if an employee takes out a patent on an invention he has made, the employer cannot claim it, in the absence of a contract provision, unless the work the employee did was within the line of his duties or perhaps on the time and at the expense of the employer, or unless he occupies some peculiar relationship of trust and confidence to the employer." *Transparent Ruler Co. v. C-Thru Ruler Co., 129 Conn. 369, 28 A.2d 232 (1942).* [^transparent-ruler-default-ownership]: **Transparent Ruler Co. v. C-Thru Ruler Co.** — "The rule seems to be settled that if an employee takes out a patent on an invention he has made, the employer cannot claim it, in the absence of a contract provision, unless the work the employee did was within the line of his duties or perhaps on the time and at the expense of the employer, or unless he occupies some peculiar relationship of trust and confidence to the employer." *Transparent Ruler Co. v. C-Thru Ruler Co., 129 Conn. 369, 28 A.2d 232 (1942).* [^stanford-inventor]: **Bd. of Trustees of the Leland Stanford Junior Univ. v. Roche Molecular Systems** — "Since 1790, the patent law has operated on the premise that rights in an invention belong to the inventor." *Bd. of Trustees of the Leland Stanford Junior Univ. v. Roche Molecular Sys., Inc., 563 U.S. 776 (2011).* [^dubilier-hired-to-invent]: **United States v. Dubilier Condenser Corp.** — "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." *United States v. Dubilier Condenser Corp., 289 U.S. 178 (1933).* [^murray-two-year-upheld]: **Murray v. A. F. Holden Co.** — "The enforcement of a restrictive contract which involves no limitation as to time or space presents a very different question from that which arises in the instant case where there is a reasonable limitation of two years, involving also a contract for the protection of trade secrets and secret processes used by the employer." *Murray v. A. F. Holden Co., 12 Conn. Supp. 419 (Conn. Super. Ct. 1944).* [^scott-reasonableness-test]: **Scott v. General Iron & Welding Co.** — "In determining whether a restrictive covenant of employment is in restraint of trade, ‘[t]he test of its validity is the reasonableness of the restraint it imposes.’" *Scott v. General Iron & Welding Co., 171 Conn. 132, 368 A.2d 111 (1976).* [^scott-fair-protection]: **Scott v. General Iron & Welding Co.** — "In order to be valid and binding, a covenant which restricts the activities of an employee following the termination of his employment must be partial and restricted in its operation ‘in respect either to time or place, . . . and must be reasonable — that is, it should afford only a fair protection to the interest 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." *Scott v. General Iron & Welding Co., 171 Conn. 132, 368 A.2d 111 (1976).* [^murray-upheld-holding]: **Murray v. A. F. Holden Co.** — "I am constrained to find that the contract, Exhibit A, is reasonable, valid and enforceable." *Murray v. A. F. Holden Co., 12 Conn. Supp. 419 (Conn. Super. Ct. 1944).* [^universal-winding-persuasive]: **Universal Winding Co. v. Clarke** — "Said written agreement was not invalid or unenforcible as an unreasonable restraint on trade." *Universal Winding Co. v. Clarke, 108 F. Supp. 329 (D. Conn. 1952).* [^stanford-traceback-practice]: **Bd. of Trustees of the Leland Stanford Junior Univ. v. Roche Molecular Systems** — "Thus, although others may acquire an interest in an invention, any such interest — as a general rule — must trace back to the inventor." *Bd. of Trustees of the Leland Stanford Junior Univ. v. Roche Molecular Sys., Inc., 563 U.S. 776 (2011).*