PS4 DualShock 4 Elite controller: Sony files patent for Xbox One Elite rival | Gaming | Entertainment | Express.co.uk
Sony Patents DualShock 4-Style PlayStation Controller for Mobile Gaming - The FPS Review
Has a PS4 wireless adapter for PC been confirmed? - GameSkinny
PlayStation Controller Patent Shows Off Interesting New Feature
Sony lands patent for a new PlayStation controller design | Engadget
Amazon.com: Patent Earth Video Game Controller Poster Print, PS4 Wall Art, Game Designer Gift, Game Room Decor, Arcade Wall Art, Video Game Art Red & White (18 inch x 24 inch): Posters
Sony has a patent for a new PlayStation controller - Polygon