Procrastination is not just for students, Apple waited until the month the iPad was to begin shipping to stores to finally obtain a trademark in the name, "iPad". "iPad" was already trademarked by another person, Thomas La Pearle. Mr. La Pearle originally refused to give up his rights in the mark. But, on March 17, 2010, Mr. La Pearle assigned his rights in the "iPad" mark to Apple for an undisclosed and likely large amount of money, stock, or iPads.
Learn more here