TATA Chemicals and Hindustan Unilever Ltd. fought the war for Water purifier
The battle is between TATA Chemicals and Hindustan Unilever Ltd. For a water filtration device 12 June, 2012 the Intellectual Property Appellate Board (IPAB), acting on a petition filed by Tata Chemicals, has revoked Indian Patent No. 195937 granted to Hindustan Unilever Ltd. (HUL) for the invention of a ‘filter cartridge’ that is used [...]





