Playing the devil’s advocate here, it could reasonably be argued that both claims by Fujitsu and Mag-Tek are illegal under trademark laws. Since Apple owns the names to iPod, iMac and iPhone, it can be argued that the term iPad is "confusingly similar" to Apples line of trademarks to mislead buyers into believing the items sold under the iPad name are manufactured by Apple, not Fujitsu or Mag-Tek, which would violate Apple’s trademark rights. If I were the lawyer in this case, I certainly would raise that argument, if for no other reason than to encourage a settlement. Also you don't have to apply for a trademark to own it, though it’s a good idea. The criteria whether you own a trademark is, are you using it, and are it identified with your company. iPad falls squarely in line with other well-known names linked to Apple.