[killjoy]

Upgrading equipment and altering a movie aren't the same thing. If you presented yourself as the original developer of the item, however, and put it into production violating any patents, you probably would be in trouble, but again, that is an entirely different issue.

Please explain how it is different.

[Republican Wildcat]

As I said, it isn't a matter of copyrights, but one of patents. Two entirely different issues.

[BigSkyFreeper]

Please explain how it is different.

That was explained upthread. If I created a gadget for use on a motorcycle and sold that gadget to Harley-Davidson for them to add to their line of motorcycles, that's perfectly legal, because that's a business to business sale, and my patent and copyright is not being infringed upon. If I altered their logo, or they altered mine that's not legal. They own that logo, and I own mine. That's why, when you look in my parents car, the car radio has a BOSE logo on it, becaus BOSE made that radio and sold it to Cadillac to install in their cars.