Patent Application 23
Patent Application 23 : Application Preparation, Filing and Prosecution: (11) Post-Issue or Grant: Many jurisdictions require periodic payment of maintenance fees in order to retain the validity of a patent after it is issued and during its term. Failure to timely pay the fees results in loss of the patent's protection. The validity of an issued patent may also be subject to post-issue challenges of various types, some of which may cause the patent office to re-examine the application
No records Found