§252 — Title 35 Patents | U.S. Code

Summary

When a patent is reissued, the old patent ends when the new one is issued. The reissued patent counts the same in future legal cases as if it had been granted that way from the start. If the claims in the reissued patent are largely the same as the original, the change does not affect lawsuits already started or claims that already exist, and the reissued patent is treated as continuing from the original patent’s date. People or businesses who, before the reissue was granted, had already made, bought, offered for sale, used, or imported the patented item may keep doing those specific things unless doing so violates a valid claim that was already in the original patent. A court can allow continued making, use, or sale of those items, or work that was substantially prepared before the reissue, and can set fair rules to protect investments or business started before the reissue, including for patented processes.

Title 35, §252

Patents — Source: USLM XML via OLRC

The surrender of the original patent shall take effect upon the issue of the reissued patent, and every reissued patent shall have the same effect and operation in law, on the trial of actions for causes thereafter arising, as if the same had been originally granted in such amended form, but in so far as the claims of the original and reissued patents are substantially identical, such surrender shall not affect any action then pending nor abate any cause of action then existing, and the reissued patent, to the extent that its claims are substantially identical with the original patent, shall constitute a continuation thereof and have effect continuously from the date of the original patent. A reissued patent shall not abridge or affect the right of any person or that person’s successors in business who, prior to the grant of a reissue, made, purchased, offered to sell, or used within the United States, or imported into the United States, anything patented by the reissued patent, to continue the use of, to offer to sell, or to sell to others to be used, offered for sale, or sold, the specific thing so made, purchased, offered for sale, used, or imported unless the making, using, offering for sale, or selling of such thing infringes a valid claim of the reissued patent which was in the original patent. The court before which such matter is in question may provide for the continued manufacture, use, offer for sale, or sale of the thing made, purchased, offered for sale, used, or imported as specified, or for the manufacture, use, offer for sale, or sale in the United States of which substantial preparation was made before the grant of the reissue, and the court may also provide for the continued practice of any process patented by the reissue that is practiced, or for the practice of which substantial preparation was made, before the grant of the reissue, to the extent and under such terms as the court deems equitable for the protection of investments made or business commenced before the grant of the reissue.

Notes & Related Subsidiaries

Historical and Revision Notes

Based on Title 35, U.S.C., 1946 ed., § 64 (R.S. 4916, amended May 24, 1928, ch. 730, 45 Stat. 732.) The first paragraph follows the present section with some rearrangement in language. The second paragraph adds new provisions for the protection of intervening rights, the court is given discretion to protect legitimate activities which would be adversely affected by the grant of a reissue and things made before the grant of the reissue are not subject to the reissue unless a claim of the original patent which is repeated in the reissue is infringed.

Editorial Notes

Amendments

1999—Pub. L. 106–113 inserted “substantially” before “identical” in two places in first par. 1994—Pub. L. 103–465 amended second par. generally. Prior to amendment, second par. read as follows: “No reissued patent shall abridge or affect the right of any person or his successors in business who made, purchased or used prior to the grant of a reissue anything patented by the reissued patent, to continue the use of, or to sell to others to be used or sold, the specific thing so made, purchased or used, unless the making, using or selling of such thing infringes a valid claim of the reissued patent which was in the original patent. 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 grant of the reissue, and it may also provide for the continued practice of any process patented by the reissue, practice, or for the practice of which substantial preparation was made, prior to the grant of the reissue, to the extent and under such terms as the court deems equitable for the protection of investments made or business commenced before the grant of the reissue.”

Statutory Notes and Related Subsidiaries

Effective Date

of 1999 AmendmentAmendment by Pub. L. 106–113 effective Nov. 29, 2000, and applicable only to applications (including international applications designating the United States) filed on or after that date, see section 1000(a)(9) [title IV, § 4508] of Pub. L. 106–113, as amended, set out as a note under section 10 of this title.

Effective Date

of 1994 AmendmentAmendment by Pub. L. 103–465 effective on date that is one year after date on which the WTO Agreement enters into force with respect to the United States [Jan. 1, 1995], with provisions relating to earliest filed patent application, see section 534(a), (b)(3) of Pub. L. 103–465, set out as a note under section 154 of this title.

§252 Effect of Reissue

Summary

Title 35, §252

Notes & Related Subsidiaries

Historical and Revision Notes

Editorial Notes

Amendments

Statutory Notes and Related Subsidiaries

Effective Date

Effective Date

Citations & Metadata