The Atari 800 computer was sold from 1979 through 1982 and was then replaced by the Atari 1200XL home computer. Boosting 64K it was to be the all new future of Atari computers. Unfortunately it had no expansion slots, no external bus connector and lost 2 of its 4 controller ports.... It was a bomb, Atari 800 sales actually increased because people ran out to buy an Atari 800 before they were all gone.
It made me wonder if someone can sue for someone copying a really stupid design.
If so, I think Atari may have a case here