Evonik Wins Two Patent Disputes, Reaffirming Legal Protection for Its 3-Stage Process with SEPURAN® Green Membranes
(Evonik) Evonik has won two legal disputes, unquestionably securing EU and US patent rights for the company’s pioneering 3-stage biogas upgrading process with SEPURAN® Green membranes. European Patent Office upholds Evonik’s EP3240620 B1 patent, dismissing all requests for invalidation filed by other