In respect of remedies for infringement of patent, which one of the following statements is incorrect?

The innocent-infringer statement is correct: s.111(1) Patents Act bars damages or an account of profits against a defendant who proves he was not aware and had no reasonable grounds for supposing that the patent existed. The injunction statement is correct: once a patent expires there is nothing left to restrain. The statement on reliefs is correct: s.108(1) provides an injunction and, at the plaintiff's option, damages or an account of profits. The statement that the suit abates on expiry is incorrect: expiry of the patent does not wipe out the patentee's claim for damages for infringement committed during the term, so that is the incorrect statement.