35 U.S.C. 256 Correction of named inventor.
(a) CORRECTION.--Whenever through error a person is named in an issued patent as the inventor, or through error an inventor is not named in an issued patent and such error arose without any deceptive intention on his part, the Director may, on application of all the parties and assignees, with proof of the facts and such other requirements as may be imposed, issue a certificate correcting such error.
(b) PATENT VALID IF ERROR CORRECTED.--The error of omitting inventors or naming persons who are not inventors shall not invalidate the patent in which such error occurred if it can be corrected as provided in this section. The court before which such matter is called in question may order correction of the patent on notice and hearing of all parties concerned and the Director shall issue a certificate accordingly.
Effective Dates for Changes Made to this Section
REMOVING DECEPTIVE INTENT, ADDING SUBSECTION HEADINGS
Section 20 of the America Invents Act
(l) EFFECTIVE DATE.--The amendments made by this section shall take effect upon the expiration of the 1–year period beginning on the date of the enactment of this Act and shall apply to proceedings commenced on or after that effective date.