Patent – Infringement. The Court of Appeal Civil Division dismissed an appeal from a decision on the Patents Court considering a claim for infringement of European Patent (UK) No 2 292 219 directed to the use of rivastigmine for use in the treatment of Alzheimer's disease wherein the rivastigmine was administered by a transdermal therapeutic system. It agreed with the trial judge that the patent should be revoked for, amongst other things invalidity on the ground of added matter and also since the claimed invention lacked an inventive step over a previous patent.