Re-examinated patents are still valid?
In " Patenting the obvious?" ( pdf), you’ll read about people fighting against a patent on methods for making embryonic stem cells from primates. I won’t go into the details about the patent in itself (although I think that there shouldn’t be any patent based on or containing living “things” or part of it). I just want to share my surprise when I read this (emphasis is mine): In its 2 April statement, the patent office said that it accepted these arguments, and intended to revoke the patents. WARF has until June to respond to the decision, and if it is unhappy with the outcome, it can then initiate an appeal. The patents will be treated as valid until the re-examination process is complete — that is, until WARF’s response and the possible appeal have concluded. That could take years. ...