"You mean like a Computer company could take a record labels name?
Like Apple? Oh - that happened."
Apple was sued, successfully, by the Beatles and reached agreement where they paid money to Apple Records and agreed to not use the Apple name in anything related to music.
A couple years back, as the iPod and iTunes took off, the Beatles filed suit again because Apple had broken the agreement and again made a deal with Apple.
Apple is a perfect example of very common word that was already trademarked in one industry, only it belonged to the Beatles. Neither the Beatles or Apple wanted the court to decide who really had the rights (or if they were each distinct and could co-exist), lest either lose, so they cut a deal.
Microsoft tried to trademark Windows across the entire computer universe, so they could prevent other software companies (at the time digital research, novell) from calling the windows in their OS Shells 'windows'. MS didn't get their way. we can still call a window a window (but HTML/browsers have helped the term "Frame" to compete).
My favorite: Anheuser Busch vs Budweiser, Budvar. AB sued to prevent the Czech brewery from using the name Budweiser outside of Czech republic where they had used the name for centuries and where the founder of AB had come to the US from. The British judge said "after tasting both beers, i doubt that anyone would confuse the 2 products!" I'd have to agree, the Czech Bud is a real beer
