In 1993 the USPTO issued this patent for using a laser pointer to exercise a cat (yes, by moving the laser pointer beam around and having the cat chase it). Come on now... Not only is this crazy to patent, but this idea had surely been thought of long before this patent came about. In fact, a bit of research turned up the book "One Hundred and Eighty-Seven Ways to Amuse a Bored Cat" (Ballantine Books; May, 1982) that describes the exact same idea, but using a flashlight. Sorry guys -- the use of a laser pointer for the same thing is obvious.
Michael Burns pointed out something truly amazing about this patent. Not only should this patent probalby never have been issued, but it appears that the USPTO has issued what is essentially the same patent many times! See:
6505576 Pet Toy
6557495 Laser Pet Toy
6651591 Automatic laser pet toy and exerciser
6701872 Method and apparatus for automatically exercising a curious animal
Michael Burns pointed out something truly amazing about this patent. Not only should this patent probalby never have been issued, but it appears that the USPTO has issued what is essentially the same patent many times! See:
6505576 Pet Toy
6557495 Laser Pet Toy
6651591 Automatic laser pet toy and exerciser
6701872 Method and apparatus for automatically exercising a curious animal