In a statement to the Daily News Monday, the law firm stated, "We are deeply saddened that we have had to file court papers today against a former partner, David Denenberg. Mr. Denenberg's actions concerning billing irregularities involving one of his former clients together with phony expense submissions left us no choice. Internal reviews conducted both by our client and (the firm) and subsequent confirmation by Mr. Denenberg conclusively established that he acted on his own and without the knowledge of anyone at (the firm)."