Patents Post Grant Blog

Cellectis Patent Surrendered by Operation of Inter Partes Reexamination Pendency

Last week, the litigation between Cellectis S.A. and Precision Biosciences Inc., (E.D. N.C) No: 5.08-CV-00119-H was stayed pending the outcome of inter partes patent reexamination proceedings involving the patents at issue in the litigation, namely, U.S. Patents 6,610,545 and 7,309,605. In the decision to stay the case, the same familiar factors were analyzed. Of particular interest is the court’s discussion of the “undue prejudice” factor.

In discussing the undue prejudice factor, the court noted that both of the patents at issue will expire in May of 2012. By pointing this out, the court surmised that should the case be stayed, any improper shifting of market share (due to infringement) would be transient at best in view of the relatively imminent patent expiration. Thus, the court found that the balance of equities favored staying the case. With regard to patent expiration, the court explained:

[I]t is uncertain whether the PTO’s reexamination will be completed before the patents expire and highly unlikely that any appeal of the PTO’s decision will be resolved prior to the expiration of the patents.

In pointing out this fact, the court unknowingly emphasized a sad reality for Cellectis. By amending the ‘605 Patent, Cellectis has effectively surrendered this patent by operation of USPTO pendency. Read the rest of this entry »

Can an Ongoing Patent Reexamination be Stopped?

With most patent reexaminations now being conducted concurrent to a district court or ITC proceeding, a common question of such plaintiffs is “what becomes of the patent reexamination once the litigation settles?”

In the case of ex parte patent reexamination, the answer is simple, the reexamination continues unaffected. On the other hand, if the pending reexamination is an inter partes patent reexamination, the answer will depend on the nature of the settlement.

In other words, inter partes patent reexamination is subject to statutory estoppel provisions not applicable to ex parte patent reexamination. Depending upon the manner in which the case settles, and whether or not the case is before the ITC, a carefully worded consent judgment can be used to trigger 35 USC § 317 (b), effectively forcing the USPTO to vacate the proceeding by operation of estoppel. Read the rest of this entry »

Last week, the Delaware District Court stayed the litigation proceedings in  Enhanced Security Research, LLC, et al. v. Cisco Systems, Inc., et al., C. A. No. 09-571-JJF, (June 25, 2010) at the defendant’s request in view of two ongoing patent reexaminations. As the  Delaware court statistically seems more receptive to stays than say, the Eastern District of Texas Court in Marshall Texas, this development is not at all surprising. 

Of more interest to me, is a recent petition decision (April 15, 2010) in the inter partes reexamination related to this litigation, 95/000489 (U.S. Patent 6,304,975).

In responding to the first action, the Patentee filed a reply over the 50 page limit identified in ( 37 CFR 1.943). Recognizing this problem, the patentee, at the time of filing the reply, simultaneously petitioned for waiver of the page limit under 37 CFR § 1.183. In response, the Third Party filed an opposition petition under 37 CFR § 1.182 objecting to any waiver of the page limit and filed a petition under 37 CFR § 1.183 to waive the rules to allow for consideration of their § 1.182 petition.

In deciding the patent owner’s petition, the Office of Patent Legal Administration (OPLA) granted the Patentee a waiver of the 50 page limit. Curiously, however, OPLA expunged the third party opposition petitions from the record and took the position that third parties have no right to oppose procedural filings of patent owners in inter partes reexamination proceedings. OPLA reasoned that the inter partes patent reexamination statutes only permit a single response to substantive issues of patentability. While I don’t necessarily disagree with OPLA’s action, I find the reasoning to be curious, as I have never seen an inter partes patent reexamination in which third party opposition petitions were not filed.  In fact, the USPTO’s Electronic File System (EFS) has a selectable document code and corresponding description “Reexamination– Opposition filed in response to petition.” ……….What Gives? Read the rest of this entry »

In light of the recent uptick in non-compliant requests for patent reexamination, last week the Central Reexamination Unit provided FAQs and best practices for preparing patent reexamination requests. The document is linked to the USPTO’s Patent Reexamination Information and Statistics page. This page is a great resource, including a lot of helpful information on pendency and CRU workload.

In addition to our previous posts on this topic (Part I & Part II), we will have more thoughts on the PTO guidance in the coming weeks.

Unlike in ex parte reexamination, a third party requester may participate at every stage of the proceedings. A third party requester (TPR) may once file written comments on any response by the patent owner to an Office action. 35 USC 314(b)(3). All proposed grounds of rejection raised by the TPR, and all TPR comments must be specifically addressed by the examiner. The TPR may appeal any proposed ground of rejection not adopted by the examiner as a final decision favorable to patentability to the Board of Patent Appeals and Interferences (BPAI) under 35 USC 134, and to the Federal Circuit under 35 USC §§ 141-144. 35 USC 315(b)(1). The TPR may be a party to nay patent owner appeal of a rejection to the BPAI under 35 USC 134, and to the Federal Circuit under 35 USC §§ 141-144. 35 USC 315(b)(2).

A TPR cannot file an inter partes reexamination request: (1) while a first inter partes reexamination is ongoing -35 USC 317(a); (2) where a final decision has been entered against the TPR in a civil action, the TPR cannot request or maintain an inter partes reexamination based on the same issues-35 USC 317(b); (3) where a final decision has been entered against the TPR in an inter partes reexamination that is favorable to the patent owner, the TPR cannot request or maintain an inter partes reexamination based on the same issues-35 USC 317(b); and (4) for a any patent that issued from an original application filed in the U.S. before November 29, 1999-Section 4608 of P.L. 106-113. Estoppel attaches against any TPR in a later civil action if the TPR loses: as to reasserting grounds of invalidity against challenged patent claims-35 USC 315(c) or as to challenging facts established in the reexamination proceedings-Section 4607 of P.L. 106-113. Read the rest of this entry »