The European Patent Office granted and published patent EP4092101A1 for a cell culture method developed by AJINOMOTO CO., INC. The patent covers methods under IPC classifications C12M 3/00, C12N 5/02, C12N 5/074, and C12N 5/10, with inventors OGawa Shimpei, Higuchi Takuya, Furomitsu Shumpei, Nishiyama Megumi, and Koseki Kotoe. The patent is designated across all European Patent Convention contracting states including AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LI, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, and TR.

Patent publications do not create compliance obligations. Third parties who believe this patent should not have been granted may file an opposition within nine months of publication. Competitors developing similar cell culture methods should review the patent claims to assess potential infringement risks. AJINOMOTO gains exclusive rights to the claimed cell culture technology across EPO member states.