Re: Apple Corp vs Apple Inc
The lawsuit started in the early 80s, and they claimed a trademark on the Apple name extending to anything in the "entertainment" realm, which they figured included home computers. Apple eventually settled and paid them $80K to go away.
Then in the late 80s they came back at Apple because people were making MIDI boards for Apple computers, and they did another settlement, which this time expressly forbid Apple from entering into the market for physical music media.
Then after the iPod/iTunes came out they went after Apple a third time, and even though Apple offered them $1 million to settle they took Apple to court, but they lost and got nothing - because the judge ruled that digital files are not PHYSICAL music media.
Presumably at some point after that they buried the hatchet for good and Beatles music finally become available on iTunes. Maybe Apple paid them off to make that happen or maybe they (well Michael Jackson, since he owned the Beatles music by that time) decided fighting Apple and staying off iTunes was costing money in the modern digital world.