Reexamination is a proceeding in the U.S. in which a patent owner or third party asks the Patent Office to conduct another examination of an already-granted patent.  The request for reexamination may be made at any time during the enforceability of the patent and must be based on prior art patents or printed publications that the requester submits to the Patent Office for consideration. 

Our attorneys regularly advise clients on the mechanisms, including reexamination, for invalidating existing patents.  Whether correcting an erroneous patent, attacking a patent’s validity, or defending against the attack of another, we are able to leverage our extensive patent prosecution and litigation experience to develop effective strategies for handling reexamination proceedings, and to efficiently and effectively implement those strategies.