Patents - Tehrani v Hamilton Bonaduz AG and others
Jane Lambert Intellectual Property Enterprise Court (HH Judge Hacon) Tehrani v Hamilton Bonaduz AG and others [2021] EWHC 3457 (IPEC) (22 Dec 2021) This was an action for patent infringement and a counterclaim for revocation. The patent in suit was GB2423721B and not GB2424721 as stated in the transcript. The invention for which the patent was granted was a “Method and apparatus for controlling a ventilator”. The patentee, Professor Tehrani, complained that the marketing of Hamilton Medical's Invellivent-ASV system infringed her patent. The suppliers of that system, Hamilton Bondauz AG and others, challenged the validity of the patent on grounds of anticipation, obviousness and insufficiency. The action and counterclaim came on for trial before Judge Hacon on 6 and 7 July 2021. By para [117] of his judgment in Tehrani v Hamilton Bonaduz AG and others [2021] EWHC 3457 which was delivered on 22 Dec 2021, the judge held that the patent was inval...