Round-up of English patent litigation 2023

Abstract 2023 saw 15 decisions, concerning 22 patents, in inter partes proceedings in which patent infringement and/or validity was in issue. 6 patents were held to be valid and infringed, 9 not to be infringed and 9 to be invalid, all but 3 on the ground of obviousness. 2023 also saw 6 Court of Appeal decisions in such proceedings, in 3 of which the trial judge was reversed on validity - in two cases in favour of the patentee.