all substantial rights. Patents. Every right in a patent (whether or not held by the grantor) that is of value when the patent rights or an undivided interest in a patent is transferred. • A transfer is not a transfer of all substantial rights to a patent if: (1) it is territorially restricted; (2) its term is less than the patent term; (3) it contains field-of-use limitations; or (4) it does not convey rights to all claims in the patent. [Cases: Patents 202(1). C.J.S. Patents § 332.]