It's been a big year for the 'impossible' EM Drive - a new kind of rocket engine that appears to generate thrust without any kind of exhaust or propellant. Back in May, NASA researchers reported a successful 10-week trial of their EM Drive prototype, and inventor Guido Fetta just got approval to test his own version in space. Now, the UK Intellectual Property Office has released the latest patent application from British EM Drive inventor Roger Shawyer, and he says millions of pounds rest on the success of design within. "The patent process is a very significant process, it's not like an academic peer review where everyone hides behind an anonymous review, it's all out in the open," Shawyer told Mary-Ann Russon at the International Business Times. "This is a proper, professional way of establishing prior ownership done by professionals in the patent office, and in order to publish my patent application, they had to first carry out a thorough examination of the physics in order to