In the case of Energeo Works India Private Limited v. Assistant Controller of Patents, the Patent Office refused a patent application relating to an air cooling system that used a mist of water to pre cool ambient air entering an air cooled chiller assembly. The refusal was based on lack of inventive step in view of two prior art documents and common general knowledge. The applicant challenged the refusal on the ground that the order was unreasoned and that the Controller had not applied the correct legal test for obviousness.
Read more about Mist in the Machine, Haze in the Reasoning: Court Reiterates Mandatory Five-Step Test for Inventive Step