No, a patent is a right to exclude others from making, using, selling, offering for sale, or importing the invention that is claimed within the patent. A patent does not, in itself, give you the right to make, use, sell, offer for sale, or import a particular device or process. In order to determine whether you or your business is legally allowed to manufacture or sell such a device or use a particular process, you need to check:
- whether other parties hold intellectual property (copyrights, patents, trademarks, trade secrets) that could legally preclude you from engaging in the activity you are contemplating; and
- whether the law (local, state, federal, and international law) allows you to engage in such activity. For example, federal law attaches criminal penalties to parties who manufacture certain types of weapons, chemical agents, biological agents, or who export certain cryptographic processes to foreign countries. Whether you obtain a patent for devices/processes that use technology within the proscribed categories has no bearing on the question of whether you have a legal right to engage in the proscribed activity. If the activity is illegal--then it is illegal, and no patent you obtain from the United States Patent & Trademark Office is ever going to alter that.