All posts by Dennis Crouch

About Dennis Crouch

Law Professor at the University of Missouri School of Law.

IP as an Antitrust Exception: SCOTUS Denies Review in $1.6B BMC-IBM Dispute

The Supreme Court has denied BMC Software's petition for writ of certiorari -- formalizing the Fifth Circuit decision that nullified a $1.6 billion judgment against IBM.  The appellate court had overturned the district court's breach of contract finding and its subsequent large damages award.

This case involves two large companies, each with billions of dollars in annual revenues. But, the setup will be familiar to so many innovative companies across the nation that are forced by market realities to do business with the very competitors that are likely to be their undoing. Small businesses frequently find themselves in Faustian bargains -- one example being selling products on Amazon while knowing the tech giant is carefully analyzing customer interactions to identify profitable markets for directly competing products.


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Design-Around Victory: Amgen’s Self-Buffering Innovation Regeneron’s Claims

By Dennis Crouch

The Federal Circuit has affirmed the denial of a preliminary injunction against Amgen's biosimilar version of Regeneron's blockbuster drug EYLEA (aflibercept). Regeneron Pharms., Inc. v. Mylan Pharms. Inc., No. 2024-2351 (Fed. Cir. Mar. 14, 2025) (Lourie, J.). This latest ruling stands in contrast to the court's January 2025 decisions upholding preliminary injunctions against Samsung Bioepis and Formycon, effectively blocking their biosimilar launches. All three cases are part of consolidated multi-district litigation in the Northern District of West Virginia.

Each appeal involves the same U.S. Patent No. 11,084,865, which covers formulations of Regeneron's aflibercept, an ophthalmic drug used to treat angiogenic eye disorders by inhibiting vascular endothelial growth factor (VEGF). EYLEA generates approximately $6 billion in annual sales, making the stakes exceptionally high for Regeneron, the biosimilar manufacturers, and patients as well.

The critical distinction in Amgen's case is its distinctive formulation approach. While Samsung Bioepis and Formycon developed biosimilars that, like EYLEA, contain a separate buffer component, Amgen developed a "self-buffering" formulation where the aflibercept protein itself provides sufficient buffering capacity to stabilize the formulation without requiring a separate buffer.


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EcoFactor v. Google: Quick Review of Oral Arguments

The Federal Circuit recently heard oral arguments in the much-anticipated en banc review of EcoFactor, Inc. v. Google LLC, a case focusing on how courts evaluate expert testimony on patent damages.  And, in particular, when a court should step-in to bar expert testimony that does not have sufficient factual basis for its conclusions.  The arguments focused on whether EcoFactor's damages expert improperly derived royalty rates from license agreements that contained performative non-binding "whereas" clauses stating EcoFactor's belief about rates, while the operative provisions specified lump-sum payments.  It seems clear to me that these provisions were added as elements of the patentee's smaller license agreements in order to later be used in larger cases, such as the one against Google.

Judge Alan Albright (W.D.Tex.) admitted testimony from EcoFactor's damages expert, David Kennedy, who derived a per-unit royalty rate from three prior EcoFactor settlement agreements to calculate a $20 million damages award against Google for infringing EcoFactor's smart thermostat patent, U.S. Patent 8,738,327.


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EcoFactor v. Google: Listen Live This Morning

EcoFactor v. Google is the Federal Circuit’s first en banc utility patent case in years.  The court will beholding oral arguments this morning, starting at 10:00 am Eastern.

  • Listen here: https://www.youtube.com/watch?v=lwEZ2MlyOv8
  • Ginger Anders (Google) will face off against Brian Ledahl (EcoFactor) before 10 members of the Court of Appeal. (Judge Newman is being excluded, and Judge Cunningham is not on the roster.)

The case generally relates to a district court judge’s gatekeeper role to prevent the Jury from hearing less-than-stellar expert testimony. Early briefing in the en banc case was a bit scatter shot, and the court released an precedential statement reiterating that the rehearing en banc is “limited to addressing the district court’s adherence to Federal Rule of Evidence 702 and Daubert v. Merrell Dow Pharmaceuticals, Inc., 509 U.S. 579 (1993), in its allowance of testimony from EcoFactor’s damages expert assigning a per-unit royalty rate to the three licenses in evidence in this case.”

Federal Circuit Rejects “Once Generic, Always Generic” Rule in Trademark Dispute Between Whiskey Makers

by Dennis Crouch

Bullshine Distillery LLC v. Sazerac Brands, LLC, 2023-1682 (Fed. Cir. March 12, 2025)

In an interesting trademark decision, the Federal Circuit has clarified that terms once considered generic do not necessarily remain permanently unregistrable.  provides important guidance on genericness timing and addresses a question of first impression in trademark law.

The case involves two alcohol producers:

  • Bullshine Distillery sought to register “BULLSHINE FIREBULL” for alcoholic beverages;
  • Sazerac, owner of “FIREBALL” branded cinnamon whiskey, and opposed the registration claiming likelihood of confusion.

Bullshine counterclaimed seeking cancellation of Sazerac’s marks, arguing “fireball” was generic for spicy cinnamon-flavored alcoholic drinks. The Trademark Trial and Appeal Board (TTAB) denied both parties’ claims, finding FIREBALL was not generic either at registration or the opposition trial, and determining there was no likelihood of confusion between the marks.  Both parties appealed. The Federal Circuit, in an opinion by Chief Judge Moore, affirmed the TTAB decisions in both cases. 

(more…)

Convergence: Island IP Points to Wave of Rule 36 Petitions

by Dennis Crouch

Island Intellectual Property has filed a rare supplemental brief in its pending Supreme Court case, drawing the Court's attention to the growing body of certiorari petitions challenging Federal Circuit practices.  The brief, submitted under Supreme Court Rule 15.8, highlights several new petitions that address the same questions Island IP raised about summary judgment standards and the Federal Circuit's use of Rule 36 affirmances. The Court is set to decide whether to grant or deny certiorari at its next conference, scheduled for March 21, 2025.  The petition challenges two Federal Circuit practices: (1) the improperly loose application of summary judgment standards in patent eligibility cases and (2) the Federal Circuit's use of one-word Rule 36 summary affirmances.


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What Does it Mean to Prove Prior Art Date by a Preponderance of the Evidence?

by Dennis Crouch

In CQV Co., Ltd. v. Merck Patent GmbH, No. 2023-1027 (Fed. Cir. Mar. 10, 2025), the Federal Circuit vacated and remanded a PTAB post-grant review (PGR) decision that had upheld the validity of Merck's patent against sales of a commercially available product. This case highlights a significant divergence between the evidentiary standards for proving prior art status in district court litigation versus AIA trials. It also sets up another increasingly common scenario where neither the patentee nor the patent challenger are US entities. Here, Merck is German and CQV is Korean.

Merck's US10647861 covers transparent α-alumina flakes with specific characteristics that are used in pearlescent pigments for various applications including automobile paint. CQV, a competitor in the pigment market, filed a post-grant review petition challenging claims 1-22--arguing that Merck's commercially available Xirallic product (specifically "Sample C") disclosed the invention and rendered the claims obvious.

Unlike in IPR proceedings, where petitioners are limited to patents and printed publications as prior art, PGR allows challenges based on any ground of invalidity, including prior art products that were "on sale" or "otherwise available to the public" as here. This case particularly focuses on how much certainty is required to establish that a product qualified as prior art under the "preponderance of the evidence" standard used in PGR proceedings.


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President Trump Formally Nominates John Squires as USPTO Director

by Dennis Crouch

President Trump has formally nominated John A. Squires to serve as Under Secretary of Commerce for Intellectual Property and Director of the United States Patent and Trademark Office. The White House announced the nomination on Tuesday, and the Senate received it on Monday, March 10, referring it to the Committee on the Judiciary. The nomination confirms reporting by Dani Kass at Law360 from mid-February that identified Squires as the likely pick.

Squires currently serves as a partner at Dilworth Paxson LLP and brings substantial intellectual property experience to the role, including a nine-year tenure as Chief IP Counsel at Goldman Sachs (2000-2009). He has particularly focused on emerging technologies including artificial intelligence, blockchain, fintech, and cybersecurity.  In addition though, Squires holds chemistry degree from Bucknell. According to reports, Squires beat out several other candidates for the role, including acting USPTO Director Coke Morgan Stewart; Intel's intellectual property policy leader Vishal Amin (who served as IP czar during Trump's first administration); former chief counsel for the Senate subcommittee on IP under Sen. Thom Tillis (R-N.C.) Brad Watts; and Pillsbury Winthrop Shaw Pittman LLP partner Bill Atkins.


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Method Claims can Cover an Entire Process Flow – Including All Conditional Branches

by Dennis Crouch

Sierra Wireless, ULC v. Sisvel S.p.A., Nos. 2023-1059, 2023-1085, 2023-1089, 2023-1125 (Fed. Cir. Mar. 10, 2025). 

In this case, the Federal Circuit has vacated and remanded, holding that the PTAB (1) improperly construed the claims and (2) abused its discretion by relying on testimony from an expert witness who did not meet the Board's defined standard for ordinary skill in the art. Both of these holdings will be housed within patent law's extensive closet full of "tricks-and-traps" for the unwary. 


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Descriptive or Highly Descriptive? The Federal Circuit Reviews the iVoters vs iVoterGuide Trademark Dispute

by Dennis Crouch

The Federal Circuit is currently reviewing a trademark opposition dispute, Heritage Alliance & AFA Action, Inc. v. The American Policy Roundtable (Appeal No. 24-1155), centered around two competing marks: IVOTERGUIDE.COM  and IVOTERS.COM. The following are, more than anything, a set of my notes on the case as I'm thinking through its importance.


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Back to the Classics: Importing Limitations from the Specification into the Claims

by Dennis Crouch

The fine line between construing claims in light of the specification and improperly importing limitations from the specification represents one of patent law's most persistent interpretive challenges. The Federal Circuit in Phillips v. AWH Corp., 415 F.3d 1303 (Fed. Cir. 2005) (en banc) established that while claims "must be read in view of the specification," courts must avoid "reading a limitation from the specification into the claim" absent express definition (lexicography) or disavowal.

In IQRIS Technologies LLC v. Point Blank Enterprises, Inc., 2023-2062 (Fed. Cir. Mar. 7, 2025), the Federal Circuit has vacated and remanded a S.D. Fla. grant of summary judgment of noninfringement on this issue, finding that the district court's claim construction improperly limited the term "pull cord."

The case centers on two IQRIS patents, US7814567 and US8256020, which share a common specification and relate to quick release systems for tactical vests worn by soldiers, law enforcement officers, and first responders. The patent propose a "pull cord" that actuates a release hook to detach portions of the vest.

Point Blank and National Molding were accused of infringement based on their "Quad Release" and "Evil Twin" quick-release systems. Both systems have use triggers that the user pulls or flips, that then actuate "Bowden" cables (similar to bicycle brake cables) to release the vest.  One example of this trigger is shown above.


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Federal Circuit offers Another Important Expansion of the Domestic Industry Requirement for USITC Jurisdiction

by Dennis Crouch

The United States International Trade Commission (USITC or ITC) operates as an independent, quasi-judicial federal agency the mission of safeguarding US domestic industries from injury caused by foreign imports.  This is a protectionist agency. In the patent context, the ITC exercises its authority under Section 337 of the Tariff Act of 1930, which prohibits the importation of articles that infringe valid U.S. patents. Unlike district courts, the ITC cannot award monetary damages but instead provides exclusion orders that block infringing imports at the border and cease-and-desist orders that prevent domestic sales of previously imported infringing products.  These orders are then enforced by US Customs and Border Protection (CBP), a branch of Homeland Security.  The ITC is attractive to patent holders because of its relatively expeditious "target date" of 16-18 months from institution to final determination (compared to multi-year district court proceedings), its experienced Administrative Law Judges who frequently handle patent matters, the difficulty respondents face in staying ITC investigations during parallel PTAB trial proceedings, and, as mentioned above, the availability of injunctive relief (via exclusion order) despite eBay.

One measure Congress took to ensure the ensures stays on-mission is through the "domestic industry" requirement.  Before the ITC can block infringing imports, the patent holder must to show the existence of a domestic industry "relating to the articles protected by the patent." 19 U.S.C. § 1337(a)(2). This requirement has two components: the "economic prong" and the "technical prong" that we'll dig into later.

When is Transnational Activity Sufficiently Domestic: The Federal Circuit's recent decision in Lashify highlights an ongoing situation with regard to domestic industry.  Lashify, Inc. v. ITC, No. 23-1245 (Fed. Cir. Mar. 5, 2025).  Lashify designs its fake eyelash products in the U.S., but manufactures them abroad, and the question is when domestic non-manufacturing activity is enough to satisfy the domestic industry requirement.


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Estoppel Timing and Procedural Traps in Patent Challenges

by Dennis Crouch

In February 2021, Gesture Technology sued several companies, including Apple, LG Electronics, and Google, for infringing its U.S. Patent No. 7,933,431. The patent, which expired in July 2020, covers technology for using cameras to detect user gestures as input for controlling handheld computing devices.  Four IPR petitions followed:

  • Unified Patents filed on May 14, 2021. IPR2021-
    00917;
  • Apple filed on May 21, 2021. IPR2021-00920;
  • LG Electronics and Google later filed "nearly identical" petitions that were joined with Apple's IPR. IPR2022-00091 and IPR2022-00359.

The PTAB instituted the IPRs and ultimately came out with a mixed result - cancelling most of the claims, but leaving a couple standing (claims 11 and 13).  On appeal, the Federal Circuit has now affirmed. Apple Inc. v. Gesture Technology Partners, LLC, No. 23-1475 (Fed. Cir. Mar. 4, 2025) (precedential); Gesture Technology Partners, LLC v. Unified Patents, LLC, No. 23-1444 (Fed. Cir. Mar. 4, 2025) (non-precedential). In the pair of opinions, both authored by Judge Prost, the court focused both on procedural IPR issues as well as substantive patent law issues. In this post, I focus mainly on the court's explanation of the obviousness standards, claim construction under §112 ¶6, IPR jurisdiction over expired patents, and IPR estoppel.  The Federal Circuit explanation here makes sense except for its analysis of estoppel, which comes at the bottom of the post.


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USPTO Withdraws Biden Era AI Strategy

The USPTO has withdrawn its artificial intelligence strategy document published in January 2025, just days before the presidential transition. Acting Director Coke Morgan Stewart recently indicated the strategy has been removed because it was "driven in part by Biden executive orders" that have since been rescinded by the Trump administration.

This move is part of a broader reassessment of federal AI policy following President Trump's executive order on January 23, 2025, titled "Removing Barriers to American Leadership in Artificial Intelligence." This new EO outlines a fundamental shift in approach, emphasizing "America's global AI dominance" rather than the previous focus on "safe, secure, and trustworthy development."

USPTO AI Strategy


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PTAB Bar Association Advocates for Stability Amid USPTO Turmoil

by Dennis Crouch

The PTAB Bar Association has issued an urgent plea to Congressional leaders and Commerce Secretary Howard Lutnick advocating for stability at the Patent Trial and Appeal Board amid significant disruptions at the USPTO. [Letter to Congress][Letter to Lutnick]. Meanwhile, Acting Director Coke Morgan Stewart recently addressed the patent community at Gene & Renée Quinn's IPWatchdog LIVE 2025 event, offering reassurances about the Office's operations despite ongoing challenges.


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The Last Word: ParkerVision’s Reply Brief Makes Final Push for Supreme Court Review of Rule 36

by Dennis Crouch

The Supreme Court is poised to decide whether to grant review in the pair of R.36 cases that have been pending now since last fall, ParkerVision and Island IP.  These cases challenging the Federal Circuit's practice of issuing one-word "AFFIRMED" judgments under Rule 36 without providing any explanation. ParkerVision's reply brief was filed on February 28, 2025 rests on a straightforward statutory interpretation: 35 U.S.C. § 144 requires the Federal Circuit to "issue to the Director its mandate and opinion" when deciding appeals from the Patent Trial and Appeal Board (PTAB). I agree with ParkerVision on this point -- the term "opinion" is a legal term of art that unambiguously requires a court to explain its reasoning—something a one-word affirmance plainly fails to do.  What was fairly amazing about the opposition brief, filed last month by the Chinese electronics giant TCL, is the absence of any direct push-back against central statutory interpretation question.  As ParkerVision notes, "Respondents concede the question presented. They do not dispute that § 144 of the Patent Act requires the Federal Circuit to decide an appeal from the Patent Trial and Appeal Board (PTAB) by issuing an 'opinion.'"


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Second-Guessing the Jury: The Federal Circuit’s Flawed Take on Enhanced Damages in Halo v. Pulse

by Dennis Crouch

After 18 years of litigation, the Federal Circuit has once again ruled in the patent infringement case Halo v. PulseThe February 28, 2025 opinion, authored by Judge Bryson, deals with enhanced damages, attorney fees, prejudgment interest, and the denial of a new damages trial.  On the biggest issue, punitive damages, I explain why the Federal Circuit was wrong in affirming the district court’s refusal to enhance damages.  In my view, the Federal Circuit sidestepped the practical implications of the jury's willfulness, treating the verdict as a checkbox rather than a meaningful  factual finding for enhanced damages.

Read on for my full analysis.


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OpenEvidence v. Pathway: The Legal Battle Over AI Reverse Engineering

Guest Post by Professor Camilla Hrdy (Rutgers Law)

Can generative AI models like ChatGPT be “reverse engineered” in order to develop competing models? If so, will this activity be deemed legal reverse engineering or illegal trade secret misappropriation?

I have now written a few articles exploring this question, including Trade Secrecy Meets Generative AI and Keeping ChatGPT a Trade Secret While Selling It Too. But when I first asked this question a year and a half ago, I was getting responses purely in the negative. I asked a panel at a trade secret conference at Georgetown in 2023, “Can ChatGPT be reverse engineered?” Several members of the panel laughed.  I would talk to AI experts, and the answer I got was along the lines of: “it’s not going to happen.”

But one of my students, Devin Owens at Akron Law, who has both a patent law and a computer science background, insisted to me that reverse engineering was possible using “model extraction attacks.”  A model extraction attack entails imputing a massive number of queries into a “target AI model” and using the target’s responses to train a new model that mimics the original’s behavior and functionality.  Devin wrote a student note about this, arguing that AI models are so vulnerable to extraction attacks that they can’t really be “owned” by anyone.

Now it seems clear that at least partial reverse engineering of generative AI models is indeed possible, and of increasing concern to AI developers. (more…)

The Fintiv Pendulum Swings Again: More Discretionary Denials Coming Soon

The pendulum of the mind
alternates between sense and nonsense,
not between right and wrong. 
- Carl Jung (Memories, Dreams, Reflections)

By Dennis Crouch

In a significant policy shift, Acting USPTO Director Coke Stewart has rescinded the June 21, 2022, Vidal memorandum that had significantly curtailed discretionary denials of PTAB post-grant proceedings. This rescission signals a potentially dramatic return to broader PTAB discretion in denying institution of inter partes reviews (IPRs) in cases with parallel district court litigation. I believe we can expect a significant uptick in discretionary denials of IPR institution petitions. And, patent holders in district court will be looking for ways to quickly move cases forward in order to provide evidence that IPR denial is appropriate.

The tersely worded announcement from the USPTO simply directs parties to once again rely on PTAB precedent for guidance, specifically highlighting the precedential PTAB decisions of Apple Inc. v. Fintiv, Inc., IPR2020-00019, Paper 11 (PTAB Mar. 20, 2020) and Sotera Wireless, Inc. v. Masimo Corp., IPR2020-01019, Paper 12 (PTAB Dec. 1, 2020). The announcement further states that any portions of PTAB or Director Review decisions relying on the now-rescinded Vidal Memorandum shall not be binding or persuasive.

Since its creation under the AIA, the PTAB has rapidly established itself as America's most active patent litigation forum -- and the only one that is effectively risk-free for patent challengers. Before the AIA created the IPR system, district courts rarely invalidated patents on obviousness grounds because of the doctrine's technical complexity that often went beyond the span of generalist federal judges and juries. PTAB judges are hired for their willingness and ability to dig deeply into complex obviousness arguments involving the combination of multiple references. Over the past decade, the PTAB has invalidated tens of thousands of patent claims as obvious. To put this in perspective, I am fairly confident the PTAB has invalidated more patent claims on obviousness grounds in its short life than all federal courts combined since the founding of our patent system in 1790.  AIA Trials have been a huge shock to the patent system -- a shock that has almost entirely favored patent challengers.  Thus, Director Stewart's new policy change is important as it is likely to redirect access to this powerful alternative forum.


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