There was no intent to decieve or misrepresentation - hell, we had to ammend to overcome statuory DP via rejection with parent X.
The PTO might take the position that there is an error in the patent as issued and that the error is correctable, but that you haven't taken the proper steps to make the correction.
I think your 120 'patent versus application' argument is a loser given that the bpatent originally issued without the benefit claim.
well, we have... we filed a certificate of correction. Moreover, the ENTIRE prosecution occurred w/ the understanding of the applicant, the patent office, and the examiner, that application A* was a CON of parent X. There's gotta be a comparable "significant performance" doctrine out there or something...
Might be a loser, but the ship is going down, so it's all hands/arguments on deck.