# United States Code/Title 35/Chapter 25/Section 256

From the U.S. House of Representatives.
Section 256. Correction of named inventor
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, issued a certificate correcting such error.
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.

## Source

(July 19, 1952, ch. 950, 66 Stat. 810; Pub. L. 97-247, Sec. 6(b), Aug. 27, 1982, 96 Stat. 320; Pub. L. 106-113, div. B, Sec. 1000(a)(9) [title IV, Sec. 4732(a)(10)(A)], Nov. 29, 1999, 113 Stat. 1536, 1501A-582; Pub. L. 107-273, div. C, title III, Sec. 13206(b)(1)(B), Nov. 2, 2002, 116 Stat. 1906.)

## Historical and Revision Notes

This section is new and is companion to section 116.
The first two paragraphs provide for the correction of the inadvertent joining or nonjoining of a person as a joint inventor. The third paragraph provides that a patent shall not be invalid for such cause, and also provides that a court may order correction of a patent; the two sentences of this paragraph are independent.

## Amendments
### 2002

Pub. L. 107-273 made technical correction to directory language of Pub. L. 106-113. See 1999 Amendment note below.

### 1999

Pub. L. 106-113, as amended by Pub. L. 107-273, substituted “Director” for “Commissioner” in two places.

#### Effective Date of 1999 Amendment

Amendment by Pub. L. 106-113 effective 4 months after Nov. 29, 1999, see section 1000(a)(9) [title IV, Sec. 4731] of Pub. L. 106-113, set out as a note under section 1 of this title.

### 1982

Pub. L. 97-247 substituted “Correction of named inventor” for “Misjoinder of inventor” as section catchline and, in text, substituted “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 Commissioner 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” for “Whenever a patent is issued on the application of persons as joint inventors and it appears that one of such persons was not in fact a joint inventor, and that he was included as a joint inventor by error and without any deceptive intention, the Commissioner 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 deleting the name of the erroneously joined person from the patent”, substituted “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” for “Whenever a patent is issued and it appears that a person was a joint inventor, but was omitted by error and without deceptive intention on his part, the Commissioner 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 adding his name to the patent as a joint inventor”, and struck out provision that the misjoinder or nonjoinder of joint inventors not invalidate a patent, if such error could be corrected as provided in this section.

#### Effective Date of 1982 Amendment

Amendment by Pub. L. 97-247 effective six months after Aug. 27, 1982, see section 17(c) of Pub. L. 97-247, set out as an Effective Date note under section 294 of this title.