Patents Post Grant Blog

CAFC to Decide Prosecution Laches in Patent Reissue

Earlier this year we discussed the Ex Parte Tanaka decision of the Board of Patent Appeals & Interferences (BPAI) with respect to “bullet claims”  in patent reissue, now before the CAFC. On June 24, 2010, a second Board decision relating to patent reissue was appealed to the Federal Circuit (Ex Parte Staats).

Although presented in the context of patent reissue, the point of contention in Staats is actually one of prosecution laches and the application of equitable principles to statutory interpretation. In Staats, the Board upheld a rejection of a broadening reissue application as defective under 35 U.S.C. 251 for failing to include the appropriate broadening oath within two years of the original patent issuance. The Board reasoned that although a parent reissue had filed an appropriate broadening oath and identified at least one error, the continuation reissue was not entitled to rely on that oath, despite the continuity between these reissue applications. Read the rest of this entry »

As provided by 35 U.S.C. § 251, Patent Reissue is a mechanism by which a patent owner may correct an error in an issued patent. A proper reissue application is directed to an error that was made without deceptive intent that renders an issued patent wholly, or partly, inoperative.

Patent owners seeking reissue within two years of patent issuance are permitted the additional opportunity to broaden the issued claims, subject to intervening rights. Reissue applications filed outside this two year window may not broaden issued claim scope.

Although patent reissue allows for the correction of mistakes in claim scope, the proceeding is not a “do-over” of the original prosecution.  Important limits are placed on patent reissue with respect to Read the rest of this entry »

–Procedural Alchemy–

The general policy of the USPTO is that the examination of a reissue application and an inter partes reexamination proceeding will not be conducted separately at the same time as to a particular patent. MPEP § 2686.03.  The reason for this policy is to permit timely resolution of both the reissue and the inter partes reexamination, to the extent possible, and to prevent inconsistent, and possibly conflicting, amendments from being introduced into the two files on behalf of the patent owner.  If both a reissue application and an inter partes reexamination proceeding are pending concurrently on a patent, a decision will normally be made to merge the reissue application examination and the inter partes reexamination proceeding or to stay one of the two.[1]

Where a reissue application and an inter partes reexamination proceeding are pending concurrently on a patent, the patent owner, i.e., the reissue applicant, has a responsibility to notify the Office of such. 37 CFR 1.178(b), 1.985.  See also MPEP § 1418.  In addition, the patent owner should file in the inter partes reexamination proceeding, as early as possible, a Notification of Concurrent Proceedings pursuant to 37 CFR 1.985 to notify the Office in the inter partes reexamination proceeding of the existence of the two concurrent proceedings.

The decision on whether or not to merge the reissue application examination and the reexamination proceeding or which (if any) is to be stayed (suspended), will generally Read the rest of this entry »

If a patent owner has disclosed, but not claimed some embodiments of the invention, resort to the doctrine of equivalence to protect such unclaimed embodiments may be lost through the doctrine of prosecution history estoppel. Let’s assume, for sake of argument, that the patent application that led to the patent contained no claims to the genus covering the species set forth as separate embodiments of the invention and the prosecution history of the patent contained no arguments applicable to the unclaimed embodiments. Consequently, if the patent is less than two years old, the patent owner may seek to correct this error in claiming less than she was entitled to claim through the filing of a broadened reissue application claiming the previously unclaimed embodiments of the invention. The doctrine of impermissible recapture in such circumstances would not apply.

In accordance with MPEP § 1412.01:

Claims presented in a reissue application are considered to satisfy the requirement of 35 U.S.C. 251 that the claims be “for the invention disclosed in the original patent” where:
(A) the claims presented in the reissue application are described in the original patent specification and enabled by the original patent specification such that 35 U.S.C. 112 first paragraph is satisfied; and
(B) nothing in the original patent specification indicates an intent not to claim the subject matter of the claims presented in the reissue application.
The presence of some disclosure (description and enablement) in the original patent should evidence that applicant intended to claim or that applicant considered the material now claimed to be his or her invention.
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**>One should understand<, however, >that< the mere failure to claim a disclosed embodiment in the original patent (absent an explicit statement in the original patent specification of unsuitability of the embodiment) would not be grounds for prohibiting a claim to that embodiment in the reissue.

Filing a reissue application to claim previously unclaimed embodiments of the invention must be filed within two years of the issuance of the original patent, if claims to the previously unclaimed embodiments would read on something which the original claims do not. This would presume that no claims to the genus covering all the embodiments of the invention existed in the original patent. The test for a broadening reissue is whether the reissue patent claims would be infringed without infringing the original patent claims.

This gambit will avoid the loss of potentially valuable patent rights where the patent owner did not file a voluntary divisional application to seek protection for the previously unclaimed embodiments of the invention before issuance of the original patent.