Akron, OH asked in Patents (Intellectual Property) for Pennsylvania

Q: When does a patent have to be renewed from filed date or date of patent i forget

Not sure when time goes by date filed or date granted and how iften again 3 years 7 and 12?

1 Lawyer Answer
Kevin E. Flynn
Kevin E. Flynn
PREMIUM
Answered
  • Patents Lawyer
  • Chapel Hill, NC

A: Maintenance fee window opens 3 years from issue date of patent. The window closes 4 years from the issue date. The process repeats at year 7 and year 11.

Purposeful failure to renew causes the patent to lapse. Unintentional failure to pay during the window can be fixed with payment of an additional fee.

I hope that this helps.

Kevin E Flynn

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