Simplify the following text for a Grade 7 native English-speaking person.
Original: The term `` patent troll '' was used as early as 1993 to describe companies that file aggressive patent lawsuits . The Patent Troll was originally depicted in `` The Patents Video '' which was released in 1994 and sold to corporations , universities and governmental entities .
Simplified: A patent troll is different from other patent owners for two reasons .