User:Doctor Whom/Sandbox/Statutory disclaimer

In United States patent law, a statutory disclaimer is a statement in writing, recorded in the United States Patent and Trademark Office, disclaiming a complete claim of a patent or disclaiming a term, or terminal part of a term, of a patent granted or to be granted. If a claim in a patent is invalid, requires that the invalid claim be disclaimed before costs may be recovered. A disclaimer disclaiming a terminal part of a term is called a terminal disclaimer and is often used to overcome a rejection for obviousness-type double patenting; however, a terminal disclaimer is ineffective against a rejection for same-invention double patenting under.

A statutory disclaimer may be filed as a paper document or through the Electronic Filing System as a document saved as PDF. A terminal disclaimer may also be filed as a purely Web-based eTerminal Disclaimer.