US Code

Public Law 119-73 (01/23/2026)

35 U.S.C. § 103

Conditions for patentability; non-obvious subject matter

A patent for a claimed invention may not be obtained, notwithstanding that the claimed invention is not identically disclosed as set forth in section 102, if the differences between the claimed invention and the prior art are such that the claimed invention as a whole would have been obvious before the effective filing date of the claimed invention to a person having ordinary skill in the art to which the claimed invention pertains. Patentability shall not be negated by the manner in which the invention was made.

July 19, 1952, ch. 95066 Stat. 798Pub. L. 98–622, title I, § 10398 Stat. 3384Pub. L. 104–41, § 1109 Stat. 351Pub. L. 106–113, div. B, § 1000(a)(9) [title IV, § 4807(a)]113 Stat. 1536Pub. L. 108–453, § 2118 Stat. 3596Pub. L. 112–29125 Stat. 287(, ; , , ; , , ; , , , 1501A–591; , , ; , §§ 3(c), 20(j), , , 335.)

Historical and Revision Notes

There is no provision corresponding to the first sentence explicitly stated in the present statutes, but the refusal of patents by the Patent Office, and the holding of patents invalid by the courts, on the ground of lack of invention or lack of patentable novelty has been followed since at least as early as 1850. This paragraph is added with the view that an explicit statement in the statute may have some stabilizing effect, and also to serve as a basis for the addition at a later time of some criteria which may be worked out.

The second sentence states that patentability as to this requirement is not to be negatived by the manner in which the invention was made, that is, it is immaterial whether it resulted from long toil and experimentation or from a flash of genius.

Editorial Notes

Amendments

Pub. L. 112–29, § 3(c)2011—, amended section generally. Prior to amendment, section consisted of subsecs. (a) to (c) and related to conditions for patentability; non-obvious subject matter.

Pub. L. 112–29, § 20(j)Subsecs. (a), (c)(1). , struck out “of this title” after “102”.

Pub. L. 108–453section 102 of this title2004—Subsec. (c). amended subsec. (c) generally. Prior to amendment, subsec. (c) read as follows: “Subject matter developed by another person, which qualifies as prior art only under one or more of subsections (e), (f), and (g) of , shall not preclude patentability under this section where the subject matter and the claimed invention were, at the time the invention was made, owned by the same person or subject to an obligation of assignment to the same person.”

Pub. L. 106–1131999—Subsec. (c). substituted “one or more of subsections (e), (f), and (g)” for “subsection (f) or (g)”.

Pub. L. 104–411995— designated first and second pars. as subsecs. (a) and (c), respectively, and added subsec. (b).

Pub. L. 98–622section 102 of this title1984— inserted “Subject matter developed by another person, which qualifies as prior art only under subsection (f) or (g) of , shall not preclude patentability under this section where the subject matter and the claimed invention were, at the time the invention was made, owned by the same person or subject to an obligation of assignment to the same person.”

Statutory Notes and Related Subsidiaries

Effective Date of 2011 Amendment

section 3(c) of Pub. L. 112–29section 3(n) of Pub. L. 112–29section 100 of this titleAmendment by effective upon the expiration of the 18-month period beginning on , and applicable to certain applications for patent and any patents issuing thereon, see , set out as an Effective Date of 2011 Amendment; Savings Provisions note under .

section 20(j) of Pub. L. 112–29lPub. L. 112–29section 2 of this titleAmendment by effective upon the expiration of the 1-year period beginning on , and applicable to proceedings commenced on or after that effective date, see section 20() of , set out as a note under .

Effective Date of 2004 Amendment

Pub. L. 108–453, § 3118 Stat. 3596

“(a)

In General .—

The amendments made by this Act [amending this section] shall apply to any patent granted on or after the date of the enactment of this Act [].
“(b)

Special Rule .—

The amendments made by this Act shall not affect any final decision of a court or the United States Patent and Trademark Office rendered before the date of the enactment of this Act, and shall not affect the right of any party in any action pending before the United States Patent and Trademark Office or a court on the date of the enactment of this Act to have that party’s rights determined on the basis of the provisions of title 35, United States Code, in effect on the day before the date of the enactment of this Act.”
, , , provided that:

Effective Date of 1999 Amendment

Pub. L. 106–113, div. B, § 1000(a)(9) [title IV, § 4807(b)]113 Stat. 1536

“The amendment made by this section [amending this section] shall apply to any application for patent filed on or after the date of the enactment of this Act [].”
, , , 1501A–591, provided that:

Effective Date of 1995 Amendment

Pub. L. 104–41, § 3109 Stat. 352

“The amendments made by section 1 [amending this section] shall apply to any application for patent filed on or after the date of enactment of this Act [] and to any application for patent pending on such date of enactment, including (in either case) an application for the reissuance of a patent.”
, , , provided that:

Effective Date of 1984 Amendment

Pub. L. 98–622, title I, § 10698 Stat. 3385

“(a)
Pub. L. 98–622section 157 of this titlesection 157 of this title Subject to subsections (b), (c), (d), and (e) of this section, the amendments made by this Act [probably should be “this title”, meaning title I of , enacting , amending this section and sections 116, 120, 135, and 271 of this title, and enacting a provision set out as a note under ] shall apply to all United States patents granted before, on, or after the date of enactment of this Act [], and to all applications for United States patents pending on or filed after the date of enactment.
“(b)
The amendments made by this Act shall not affect any final decision made by the court or the Patent and Trademark Office before the date of enactment of this Act [], with respect to a patent or application for patent, if no appeal from such decision is pending and the time for filing an appeal has expired.
“(c)
Section 271(f) of title 35 , United States Code, added by section 101 of this Act shall apply only to the supplying, or causing to be supplied, of any component or components of a patented invention after the date of enactment of this Act [].
“(d)
No United States patent granted before the date of enactment of this Act [] shall abridge or affect the right of any person or his successors in business who made, purchased, or used prior to such effective date anything protected by the patent, to continue the use of, or to sell to others to be used or sold, the specific thing so made, purchased, or used, if the patent claims were invalid or otherwise unenforceable on a ground obviated by section 103 or 104 of this Act [amending this section and sections 116 and 120 of this title] and the person made, purchased, or used the specific thing in reasonable reliance on such invalidity or unenforceability. If a person reasonably relied on such invalidity or unenforceability, the court before which such matter is in question may provide for the continued manufacture, use, or sale of the thing made, purchased, or used as specified, or for the manufacture, use, or sale of which substantial preparation was made before the date of enactment of this Act, and it may also provide for the continued practice of any process practiced, or for the practice of which substantial preparation was made, prior to the date of enactment, to the extent and under such terms as the court deems equitable for the protection of investments made or business commenced before the date of enactment.
“(e)
The amendments made by this Act shall not affect the right of any party in any case pending in court on the date of enactment [] to have their rights determined on the basis of the substantive law in effect prior to the date of enactment.”
, , , provided that: