Ask Patents is a question and answer site for people interested in improving and participating in the patent system. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

Isn't there royalties insued by the inventors family if the patent is re-purchased? It seems The National Tea Company , not in existence, still owes my family money.

share|improve this question

Any patent from that time from would have long long ago expired and the time to sue anyone for infringement during the time it was in force is also long gone. A patent can be sold outright by the inventor to a company or they could agree on a royalty of some sort. That is all between the inventor and the licensee or assignee.

share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.