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Tag Archives: Estoppel

Claim Construction Not Illuminated By Ambiguous Restriction Requirement

Posted in Claim Construction; Federal Circuit Decisions

In Plantronics, Inc. v. Alph, Inc., the Federal Circuit rejected arguments that the election made in response to the Restriction Requirement limited the scope of the claims in a manner that was not reflected in the claim language, specification, or prosecution history. Although the patent holder prevailed on this issue, this case serves as a reminder that every stage of prosecution can give rise to prosecution history estoppel.

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Fresenius Escapes $25 Million Damages Award, Based on Invalidation of Baxter Patent In Ex Parte Reexamination

Posted in Federal Circuit Decisions; Patent Trials

In Fresenius, USA Inc. v. Baxter International, Inc., the Federal Circuit interpreted the ex parte reexamination statutes (35 USC §§ 301-307) as providing that the final cancellation of claims in a reexamination proceeding is binding on concurrent litigation proceedings, as long as the litigation is still pending. This decision validates the use of ex parte reexamination to launch a collateral attack on patents in litigation. While many defendants hesitate to bring an ex parte reexamination because of the very limited role they would have in the proceedings, because ex parte reexamination is not limited by the timing requirements of inter partes review and post grant review proceedings, and does not carry the same litigation estoppel, it may be worthy of a second look under appropriate circumstances.

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Federal Circuit Holds The Reexamination Door Open In In Re Baxter

Posted in Federal Circuit Decisions

When the Federal Circuit denied the Request for Panel Rehearing and Rehearing en banc in In re Baxter, the court let stand its two decisions that affirmed conflicting rulings on the validity of the same patent. In Fresenius USA, Inc. v. Baxter Int’l, Inc., 582 F.3d 1288 (Fed. Cir. 2009), the court affirmed the district court decision that upheld the validity of claims 26-31 of U.S. Patent 5,247,434, while in its May 17, 2012 decision in In re Baxter, the court affirmed the USPTO Board decision that the claims were invalid as obvious. Parallel litigation and USPTO proceedings involving the same patent may become more rare now that the America Invents Act (AIA) has replaced inter partes reexamination with inter partes review and placed restrictions on parallel litigation proceedings, but still could arise from pending inter partes reexamination proceedings or from ex parte reexamination proceedings, which are not subject to the same restrictions.Continue reading this entry

USPTO Reverses Course to Permit Anonymous Ex Parte Reexamination Requests

Posted in Patent Reform; Reexam; USPTO Proposed Rule Changes

Responding to public feedback, the USPTO announced that it has dropped a controversial proposal that would have required all requests for ex parte reexamination to identify the requester’s “real party in interest.”  The change is one of several new provisions in a Final Rule, released August 6, 2012, which implements a new estoppel provision in the America Invents Act (AIA) barring ex parte reexamination of a patent following the completion of an inter partes review or post-grant review.  Third-party requesters and patent owners alike will need to be familiar with the Final Rule which goes into effect on September 16, 2012.  Continue reading this entry

Adopting To First-to-File: The Significance Of Segregating Subject Matter

Posted in Patent Reform

One important strategy for adopting to the first-to-file system of the America Invents Act will be to segregate subject matter that has an effective filing date of March 15, 2013 or earlier from subject matter that has an effective filing date of March 16, 2013 or later. This is because even after March 16, 2013, it will be possible to pursue subject matter with an earlier effective filing date under the current first-to-invent system as long as it is segregated from subject matter with a later effective filing date. (For a more detailed explanation, see my previous article on The First-To-File Poison Pill.) While my previous article on the Ides of March outlined several reasons why it could be important to obtain an effective filing date of March 15, 2013 or earlier, Max Colice, a patent agent and member of the Electronics practice at Foley & Lardner LLP, has pointed out yet another reason to segregate subject matter before and after the first-to-file effective date.

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Three Proposed USPTO Board Rules That Should Not Be Adopted

Posted in Patent Reform; USPTO Proposed Rule Changes

Please welcome Andrew Baluch as a new contributing author for PharmaPatentsBlog!

There is a lot to like about the USPTO’s proposed rules for the new patent trial proceedings that the Patent Trial and Appeal Board (PTAB) will conduct under the America Invents Act (AIA). On the whole, the proposed rules released last month appear to be sound, well-written, and based largely on the “Standing Order” governing current Interference proceedings. The team of administrative judges that drafted the proposals should be commended for their work.

But, as with any project of this size, there is bound to be some oversight and possible overreach. After studying the seven Federal Register notices spanning 133 pages that comprise the post-grant rules packages, I particularly was struck by three specific proposed rules. As explained below, these three proposed rules appear to be unnecessary, unsupported by the law, and should be dropped. The USPTO would be doing everyone a favor, including itself, if it simply omits the following from its final rules.Continue reading this entry

Proposed AIA Implementation Rules: Estoppel Against Ex Parte Reexamination

Posted in Patent Reform; USPTO Proposed Rule Changes

On January 5, 2012, the USPTO issued a Federal Register Notice with proposed rules to implement provisions of the America Invents Act relating to the citation of prior art and written statements in a granted patent.  While I wrote about those changes previously, the same rules package includes proposed changes to the ex parte reexamination rules that I write about here. The USPTO will consider written comments received by March 5, 2012. Continue reading this entry

Federal Circuit Explains Unforseeability Under Festo

Posted in Doctrine of Equivalents; Federal Circuit Decisions

In Duramed Pharmaceuticals, Inc. v. Paddock Laboratories, Inc., the Federal Circuit rejected Duramed’s arguments that prosecution history estoppel did not bar application of the doctrine of equivalents under Festo because the equivalent at issue was not foreseeable. In so doing, the Court illuminated the rather narrow applicability of the “unforeseeable” route to rebutting a presumption of prosecution history estoppel.

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