Sulzer Mixpac patent appeal fails as Indian court backs prior art finding
By Freny Patel ( July 3, 2026, 05:17 GMT | Insight) -- Swiss industrial equipment manufacturer Sulzer Mixpac lost its India patent appeal after the Delhi High Court upheld the rejection of its static mixer application, finding the claimed invention obvious over prior art and lacking an inventive step.Swiss industrial equipment manufacturer Sulzer Mixpac has lost its appeal against the rejection of a patent application for a plastic static mixer after the Delhi High Court ruled that the claimed invention lacked an inventive step over prior art....
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