[unclebilly]

Originally Posted by gwl123

If there is a patent expiration date after 35-40 years why can't it be used for commercial purposes? Since its a one-off concept car, I would need a product license for business application?

Huh? Where did 35-40 years come from?

A patent is a temporary monopoly that is given in exchange for sharing the idea (teaching) within the jurisdiction in which the patent is issued.

If the design is 35-40 years old, and if there was a design patent on it in your jurisdiction, that patent is long since expired (the 15 year monopoly is over). You can go ahead, even for commercial purposes.

https://www.law.cornell.edu/uscode/text/35/173#:~:text=Patents%20for%20designs%20shall%20be,f rom%20the%20date%20of%20grant.