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March 01, 2021

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Federal Circuit Confirms Cuozzo Does Not Disturb § 314(d) Bar on Appellate Review of PTAB Reconsideration of IPR Institutions

The Federal Circuit’s recent decision in Medtronic, Inc. v. Robert Bosch Healthcare Systems, Inc., addressed the effect of the Supreme Court’s decision in Cuozzo Speed Techs., LLC v. Lee, 136 S. Ct. 2131 (2016), on the issue of whether termination of instituted inter partes review (“IPR”) proceedings based on a failure to meet the statutory filing requirements for a petition (namely, to identify all real parties-in-interest) would be barred from review by 35 U.S.C. § 314(d). The Court found that Cuozzo did not disturb Federal Circuit precedent as to the § 314(d) bar on review for reconsiderations of institution decisions.


Bosch sued Medtronic subsidiary Cardiocom, LLC for infringing two Bosch patents.  Cardiocom filed IPR Petitions on those patents, which were denied for failure to show a reasonable likelihood that the challenged claims were unpatentable.  Then, weeks before Cardiocom’s § 315(b) one-year time-bar expired, Medtronic filed three IPR Petitions on the same two patents, naming itself the sole real party-in-interest.  Bosch’s Preliminary Response challenged institution on the basis that Cardiocom should have been named as a real party-in-interest under § 312(a), but the Patent Trial and Appeal Board (the “Board”) instituted review.  Bosch then moved for and was granted additional discovery into Cardiocom’s status as a real party-in-interest, which revealed evidence that persuaded the Board that Medtronic was acting as a proxy for Cardiocom.  Accordingly, the Board vacated the institution decisions and terminated the proceedings. 

On appeal, the original panel followed Federal Circuit precedent which held that a determination to discontinue the IPR proceedings was not reviewable on appeal under § 314(d).  Medtronic petitioned for rehearing and the Federal Circuit requested supplemental briefing in view of the Supreme Court’s holding in Cuozzo.

Panel Decision

Under 35 U.S.C. § 314(d), a decision whether to institute an IPR is “final and nonappealable.”  In Cuozzo, the Supreme Court held that § 314(d) operates to bar review in cases where the challenge “consist[s] of questions that are closely tied” or “closely related” to “the application and interpretation of statutes related to the Patent Office’s decision to initiate inter partes review.”  Cuozzo, 136 S. Ct. at 2141–42.  Quoting this language from Cuozzo, the rehearing panel reasoned that “[i]t is very difficult to conceive of a case more ‘closely related’ to a decision to institute proceedings than a reconsideration of that very decision.”  Medtronic, Inc. v. Robert Bosch Healthcare Systems, Inc., No. 15-1977, slip op. at 5 (Fed. Cir. 2016).  The rehearing panel explained that questions regarding the application and interpretation of “statutes ‘closely related’ to the decision whether to institute are necessarily, and at least, those that define the metes and bounds of the inter partes review process” and § 312(a) is a provision that “define[s] the metes and bounds of the inter partes review process.”  Id. at 4–5 (citing Husky Injection Molding Sys. Ltd. v. Athena Automation Ltd., No. 15-1726, 2016 WL 5335500, at *6 (Fed. Cir. Sept. 23, 2016)).  Accordingly, the panel reaffirmed the original panel holding that the Board’s reconsideration of its decision whether to institute IPR proceedings is barred from review by § 314(d).  Id. at 4–6. 

The Federal Circuit rejected Medtronic’s argument that the “under this section” language of § 314(d) limits the bar on reviewability to questions arising only under § 314.  For support, the Federal Circuit cited two post-Cuozzo Federal Circuit cases (Husky and Wi-Fi One, LLC v. Broadcom Corp., No. 15-1944, 2016 WL 4933298, at *4 (Fed. Cir. Sept. 16, 2016)), which held that § 314(d) barred review of questions “closely related” to the institution decision, such as assignor estoppel or the time-bar of § 315(b).  Medtronic, slip op. at 5.  According to the Federal Circuit, “[n]othing in Cuozzo casts doubt on that interpretation of the statute, especially in light of the fact that the Supreme Court held that the particularity requirement, which is contained in section 312, is nonappealable.”  Id. at 6 (quoting Wi-Fi One, 2016 WL 4933298, at *4).

The Federal Circuit also rejected Medtronic’s argument that the Board lacked authority to reconsider its earlier decisions.  The Federal Circuit reasoned that a proceeding can be “dismissed” after it is instituted under § 318(a), and the Board has “inherent authority to reconsider its decisions”; therefore, the Board did not exceed its authority in reconsidering its institution decisions.  Id. at 6–7.  The Federal Circuit also concluded that there was no colorable constitutional issue in this case.  Id. at 7.

Finally, in response to Medtronic’s alternative request to treat its appeal as a petition for a writ of mandamus, the Federal Circuit determined once again that Medtronic was not entitled to mandamus relief because there is no “clear and indisputable” right to relief in view of the statutory scheme precluding review of non-institution decisions.  Id. at 8. 

Practical Implications

The recent Supreme Court and Federal Circuit decisions in the below table illustrate the types of challenges which the courts have found to be “closely related” to a decision whether to institute an IPR for which review is barred by § 314(d):


Related Statutes

Challenge at issue

Cuozzo Speed Techs., LLC v. Lee, 136 S. Ct. 2131 (2016)

§ 312(a)(3) (“particularity” requirement)

Whether the Board’s decision to initiate the IPR proceeding is reviewable when the Board instituted claims not pleaded “with particularity” as required by § 312(a)(3), but only implicitly pleaded in the petition.

Wi-Fi One, LLC v. Broadcom Corp., No. 15-1944, 2016 WL 4933298 (Fed. Cir. Sept. 16, 2016)

§ 315(b) (time-bar)

Whether the Board’s decision to initiate the IPR proceeding based on its assessment of the time-bar of § 315(b) is reviewable when the Board improperly allowed a privy of a time-barred district court litigant to pursue an IPR.

Husky Injection Molding Sys. Ltd. v. Athena Automation Ltd., No. 15-1726, 2016 WL 5335500 (Fed. Cir. Sept. 23, 2016)

assignor estoppel (common law); § 311 (“a person who is not the owner of a patent”)

Whether the Board’s decision during the institution phase that assignor estoppel cannot bar an assignor or his or her privies from petitioning for IPR is reviewable.

Medtronic, Inc. v. Robert Bosch Healthcare Systems, Inc., No. 2015-1977 (Fed. Cir. Oct. 20, 2016)

§ 312(a)(2) (identity of all real parties-in-interest)

Whether the Board’s reconsideration of a decision whether to institute IPR proceedings would be reviewable when the reconsideration was predicated on a failure to identify real parties-in-interest as required by § 312(a)(2).

Thus, it appears that the Federal Circuit post-Cuozzo considers statutes related to IPR filing procedures and requirements to be “closely related” to the decision to institute.  This may mean that other procedure-related statutes, such as § 312(a)(1) (payment of the fee), § 315(a)(1) (time-bar when the petitioner filed a civil action), or § 319(e)(1) (petitioner estoppel), will be also considered “closely related” to a decision to institute IPR proceedings (and, therefore, will not be reviewable on appeal), assuming that cases involving a decision to institute or terminate IPR proceedings on these procedural grounds are not related to due process issues (e.g., insufficient notice) and that the Board does not act outside its statutory limits, for example, by finding a patent claim unpatentable under 101 or 112 inan IPR.  See Cuozzo, 136 S. Ct. at 2141–2142 (“[W]e do not categorically preclude review of a final decision where a petition fails to give ‘sufficient notice’ such that there is a due process problem with the entire proceeding, nor does our interpretation enable the agency to act outside its statutory limits by, for example, canceling a patent claim for ‘indefiniteness under § 112’ in inter partes review”).

Copyright 2020 K & L GatesNational Law Review, Volume VI, Number 298



About this Author

Rebecca Crocker, Patent Litigator, KL Gates Law Firm

Rebecca Cavin is an intellectual property associate focusing on patent litigation. She has a background in mechanical engineering and is registered to practice before the U.S. Patent and Trademark Office.

Ms. Cavin’s experience includes patent litigation matters before the Northern and Southern Districts of Illinois, the District of Delaware, the Northern, Central, and Southern Districts of California, the Northern and Eastern Districts of Texas, and the International Trade Commission. She is experienced in all phases of patent litigation,...

James (Kwangho) Jang, KL Gates Law Firm, Intellectual Property Lawyer

James Jang is an intellectual property lawyer with an advanced degree in materials science and engineering. He focuses his practice on patent litigation and prosecution.

Mr. Jang’s experience includes patent litigation matters before the Southern District of New York, the District of Delaware, and the International Trade Commission both in supporting and defending charges of patent infringement.  He is experienced in many phases of patent litigation, including pre-suit investigation, pleadings, motions to dismiss, claim construction, fact and...

Jason A. Engel, Registered Patent Attorney, KL Gates, Law Firm

Jason A. Engel is a registered patent attorney with an undergraduate degree in electrical engineering. He concentrates his practice on the litigation of intellectual property matters with a focus on patent litigation and patent office litigation. He has substantial experience before the Patent Trial and Appeal Board, in federal district courts across the country, and with Section 337 investigations in the U.S. International Trade Commission.

Mr. Engel is experienced in all aspects of litigation, including discovery, motion practice, claim...