Companies implicated in DSM’s infringement lawsuit move to invalidate patents with counterclaim

18 Apr 2023 — Months after Royal DSM filed a lawsuit against the Mara Renewables Corporation and Algal Omega-3 (AO3), the two plaintiffs reveal they have filed a counterclaim against their accusers. Moreover, the companies have also issued a challenge to DSM’s microbial oil purification and fermentation patents with the European Patent Office (EPO).