It is the law of this Circuit that the "knowing failure to advise the Copyright Office of facts which might have occasioned a rejection of the application constitute[s] reason for holding the registration invalid and thus incapable of supporting an infringement action." Eckes, supra, 736 F.2d at 861-62 (quoting Russ Berrie & Co. v. Jerry Elsner Co., 482 F.Supp. 980, 988 (S.D.N.Y.1980)). Faced as we are with that exact situation in the instant case, we hold that Whimsicality, because of its misrepresentations, does not have valid copyrights capable of enforcement. We express no opinion on the unfair competition claim now before the district court.