In reference to the patent: US4364234

Do I require to get license of patent even after expiry of patent?

  • I think the edit may have changed the intention of the question - could OP clarify?
    – JDMc
    Feb 18 '15 at 19:26

The patent in question has expired. No fees or licenses are due for what it covered. However, it is possible that your product infringes on other, newer, in-force patents.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

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