Yes. There is a final date on which patent rights eventually do expire, but you will have to do your own research on the patent in question.
A prototype does not have any necessary requirements, and is in fact not even a required in order to obtain a patent. However, if you are interested in including the prototype in the patent I would suggest creating a schematic or diagram of what your patent represents.
There is no statute of limitations for a traffic trial.
No there is no statute of limitations on war crimes.
A statute of limitations is related to bringing a law suit. As such, there is no such thing as a statute of limitations on an inheritence in Oklahoma.
There is no statute of limitations for arson in Kentucky. In Ohio, the statute of limitations is 20 years. In Indiana there is no statute of limitations if it is charged as a class A felony, but if charged as a lesser felony the statute is 5 years.
no statute of limitations on judgements
In Alabama Arson is a felony. As such there is no statute of limitations.
There is no statute of limitations in Louisiana on traffic offenses
What's the statute of limitations for 273.5 in ca
What is the statute of limitations for dui in Indiana?
A statute of limitations is related to bringing a law suit. As such, there is no such thing as a statute of limitations for a bench warrant.
what is the statute of limitations for a second and third DUI in the state of Colorado?