Stew's Dentist Supply Corporation holds a patent for a toothbrush design. The CEO of Stew's Dental Supply Corporation finds that a competitor, Bob's Toothbrushes Inc. is selling toothbrushes with the patented designwithout permission from the patent holder (Stew's Dentist Supply's CEO is the patent holder).

4a. May a company sue another company? In other words, can a company (business) be a plaintiff?

4b. May a company be sued by another company? In other words, can a company (business) be a defendant?