Lego Bricks are Ripoffs

Lego bricks were based in part on the Kiddicraft Self-Locking Bricks, which were patented in the United Kingdom in 1939 and then released in 1947. Lego modified the design of the Kiddicraft brick after examining a sample given to it by the British supplier of an injection-molding machine that the company had purchased and started making Lego Bricks. Kiddicraft founder Harry Page died in 1957 without ever knowing about it. In 1981, Lego acquired Kiddicraft so that they can successfully sue Tyco, another brick maker in the late 1980s citing copyright infringement. They had bought Kiddicraft earlier to make their claim stronger. The court however decided against Lego, saying bricks are not patentable.