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Japan's Zeria denied patent by Indian court on 'evergreening' grounds

By Freny Patel ( June 13, 2025, 01:08 GMT | Insight) -- Zeria Pharmaceutical has been refused a patent by an Indian court, stopping the Japanese pharmaceutical company from extending its existing patent on an intermediate chemical compound. The Delhi High Court upheld a previous refusal by the Assistant Controller of Patents & Designs. This decision, made by Delhi High Court Judge Saurabh Banerjee, firmly opposes "evergreening," a controversial practice where companies make minor changes to existing inventions to extend their patent monopolies. Zeria Pharmaceutical has been refused a patent by an India court, stopping the Japanese pharmaceutical company from extending its existing patent on an intermediate chemical compound....

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