According to a July 30 post on the website of the European Toner and Inkjet Remanufacturers Association (ETIRA), the European Patent Office (EPO) has revoked Canon patent EP 1 536 297 B1 (EP ‘297) “Process cartridge, mounting method of electrophotographic photosensitive drum, and replacing method of the photosensitive drum.” ETIRA says the patent was revoked
