FAQs Patent Questions

Question:Public Law 91577 provides a system of protection for sexually reproduced varieties, for which protection was not previously provided,

Answer:
Public Law 91577, approved December 24, 1970, provides for a system of protection for sexually reproduced varieties, for which protection was not previously provided, under the administration of a Plant Variety Protection Office within the Department of Agriculture.

Question:Utility patents issued on and after 12/12/1980 are subject to the payment of maintenance fees

Answer:
All utility patents that issue from applications filed on and after December 12, 1980 are subject to the payment of maintenance fees which must be paid to maintain the patent in force. These fees are due at 3 1/2, 7 1/2 and 11 1/2 years from the date the patent is granted.

Question:Where can I find information about patents obtained for stem cells?

Answer:
The U.S. Patent and Trademark Office offers a full-text search of issued patents and published applications. Try searching for "stem cell" or "stem cells."

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