Samsung claimed a Chinese company stole their folding phone screen tech.
https://www.slashgear.com/samsung-galaxy-foldable-screen-tec...
https://www.slashgear.com/samsung-galaxy-foldable-screen-tec...
Apple was invited to visit Xerox in exchange for pre-IPO stock purchase rights. Xerox's management didn't know the value of what they had and willingly gave it away.