Opinion · Supreme Court of the United States

Gill v. United States

160 U.S. 426

Type
Opinion
Court
Supreme Court of the United States
Jurisdiction
Federal
Date
1896-01-06
Topic
general

How later courts describe this case

  • shop right found where employee, a skilled machinist, invented device during working hours at employer's expense, and allowed employer to use patented invention for many years
  • employer’s assistance “is important only as furnishing an item of evidence tending to show that the patentee consented to and encouraged [his employer] in making use of his devices”

Citator

UpLaw has not yet analyzed Gill v. United States. The absence of a flag is not a finding that it is good law.

Cited by
111 opinions

Headnotes

  1. Patent Law — Employee Inventions — Compensation An employee paid by salary or wages who devises an improved method of doing his work, uses the property or labor of his employer to put the invention into practical form, and assents to the employer's use of the improvement cannot, by taking out a patent for the invention, recover a royalty or other compensation for that use. 160 U.S. at 427 (syllabus), 435
  2. Patent Law — Estoppel — Acquiescence in Use The rule barring an employee-inventor from recovering compensation for his employer's use of his invention is an application of the law of estoppel in pais: a person who looks on and assents to that which he has power to prevent is precluded from afterwards maintaining an action for damages. 160 U.S. at 434
  3. Patent Law — Abandonment of Inchoate Right An inventor who makes his discovery public, looks on, and permits others to use it without objection or assertion of a claim for royalty abandons his inchoate right to the exclusive use of the invention, and that right, once gone, cannot afterwards be resumed at his pleasure; the legal inference arises from the inventor's conduct and the interests of the public, not from his intention. 160 U.S. at 434-435
  4. Patent Law — Employee Inventions — License to Employer Where one in the employ of another in a certain line of work devises an improved method or instrument for doing that work, uses the property of his employer and the services of co-employees to develop and put the invention into practical form, and expressly assents to the employer's use of it, the court may find that he has given the employer an irrevocable license to use the invention. 160 U.S. at 438 (quoting Solomons v. United States, 137 U.S. 342, 346)
  5. Patent Law — Employee Inventions — Employer Property It is immaterial whether the employer's property and labor were used in experiments to develop the invention, in preparing patterns and working drawings, or in constructing the completed machines; the material fact is that the patentee used the employer's labor and property in putting his invention into the form of an operative machine, and if the machines had proven unsuccessful the loss would have fallen on the employer. 160 U.S. at 436-437
  6. Patent Law — Employee Inventions — Use of Employer's Property as Evidence of Consent The employee-inventor's use of the employer's property and labor in reducing his conceptions to practical form is important only as evidence tending to show that he consented to and encouraged the employer's use of his devices; the ultimate fact to be proved is the estoppel arising from consent to that use without demand for compensation, which may be shown by express agreement, parol testimony, or conduct proving acquiescence. 160 U.S. at 437
  7. Patent Law — Employee Inventions — Duty to Invent The mere fact that a person is employed by the government does not preclude him from making improvements in the machines with which he is connected and obtaining patents therefor as his individual property; but if the patentee was employed to invent or devise such improvements, the patents for them belong to his employer, because in making them he is merely doing what he was hired to do. 160 U.S. at 437-438
  8. Patent Law — Employee Inventions — Compensation — Fair Dealing A patentee has no right, in law or morals, to persuade or encourage officers of the government to adopt his inventions and then look on while they are used year after year without objection or claim for compensation, and afterwards set up a demand on the ground that the government impliedly promised to pay; a patentee is bound to deal fairly with the government and to make any claim openly and frankly rather than silently raise a demand by entrapping its officers into using his inventions. 160 U.S. at 439-440
  9. Patent Law — Implied Contract — Unpatented Inventions Where an employee suggested to a commanding officer the adoption of mere undeveloped conceptions not yet embodied in a machine, it being uncertain whether he could or would obtain patents for them, no agreement by the government to pay for the use of such machines under patents that might later be applied for and granted can be implied from their adoption. 160 U.S. at 440