In the United States – and in most nations around the world – patent infringement is not a crime, so enforcing an infringed patent the responsibility of the patent owner. A U.S. Patent identifies the inventor or inventors of the patented technology, and the patent may also show an “assignee” – usually a business or university – that is the owner of the patent.

Whether the owner of a U.S. Patent is a person, a business, a university or any other entity – and regardless of where the owner of the U.S. Patent is located – it is the patent owner’s responsibility to enforce the patent. In the U.S., a patent is enforced by filing a patent infringement lawsuit in U.S. District Court as explained in Many patent owners have filed patent infringement claims and have secured multi-million dollar settlements, however it costs from several hundred thousand to several million U.S. Dollars to litigate a patent infringement lawsuit!

Infringers of U.S. Patents are often large corporations, and if the owner of the infringed patent is also a large corporation, the ensuing legal battle is a contest among equals, since both parties to the lawsuit can afford the cost of trying or defending a patent infringement lawsuit. However, if the infringer is a large business enterprise, and the patent owner is an individual, small to mid-sized business, university or other entity that does not have several hundred thousand to several million U.S. Dollars to invest in patent infringement litigation, it is most definitely not a contest among equals and it is all explained in this great post on

If you believe your U.S. Patent has been infringed, there are law firms that can consider your patent and the allegedly infringing products or services.