Bonum Certa Men Certa

Distortion of the Patent System Masked Behind Acronyms Like CAFC/PTAB and Foreign-Sounding Jargon Like Estoppel or Inter Partes Review (IPR)

It's no secret, some argue, that lawyers make it difficult to understand the law so that you'll always need them to 'help'

Estoppel
Reference: Estoppel at Wikipedia



Summary: A quick look at some recent decisions/developments from the higher/highest patent courts in the US and PTAB's judgments that help improve patent quality (and are therefore hated by the patent 'industry')

CAN one patent a GUI at the USPTO? The Court of Appeals for the Federal Circuit (CAFC) does not understand GUIs/software development [1, 2], so it recently defended a patent on a GUI, contrary to common sense. As somebody from Texas put it (Jonathan Szarzynski): "Nice Precedential win for Core Wireless at the CAFC. A precedential opinion that discusses 101 and eligibility, and finds that a user interface that speeds a user's navigation through various views and windows is patentable subject matter."

"The case involves Synopsys, which now owns the nefarious, Microsoft-connected Black Duck."This is a potentially dangerous decision. Cascading menus are nothing new and to uphold a patent on those would open the floodgates to all sorts of trivial lawsuits (like Apple's "slide to unlock").

Recently, CAFC also looked at the case of patent assignor Hsiun (mentioned here before). The case involves Synopsys, which now owns the nefarious, Microsoft-connected Black Duck. The case is about assignor estoppel and it was mentioned by Patently-O a few days ago. As a bit of background:

EVE-USA was founded by former employees of Mentor — the named inventors on Mentor’s emulation software patents. Initially Mentor licensed the patents to EVE for its use, but that license was terminated when Synopsys later acquired EVE. Mentor then sued Synopsys and won a $36 million jury verdict for infringement of its U.S. Patent No. 6,240,376. Following the Federal Circuit’s decision largely supporting the verdict, EVE/Synopsis have petitioned the Supreme Court for writ of certiorari asking two questions relating respectively to Assignor Estoppel and Apportionment of Damages.


The US Supreme Court (SCOTUS) will look into it. This means that briefs will likely be submitted by the patent microcosm and we know in whose favour. The patent microcosm generally wants patents to get more 'teeth' at SCOTUS. The other day it wrote about the WesternGeco case, arguing that "SCOTUS could make patents more valuable in WesternGeco case" (not about patent scope).

"The patent microcosm generally wants patents to get more 'teeth' at SCOTUS.""Can a patent holder collect lost-profit damages if infringement of a US patent occurs abroad? The US Supreme Court will decide in WesternGeco v Ion Geophysical," Managing IP wrote. This may have an impact on trade, e.g. with China.

Going back to CAFC, there's the Arthrex patent (8,821,541) which CAFC recently decided on. PTAB was supported by CAFC (as usual) and Dennis Crouch wrote about the estoppel (it's an edge case at CAFC). To quote:

The dispute in this case is about what should happen when a patentee disclaims its patent claims prior to an inter partes review institution decision. The Arthrex patent at issue is U.S. Patent No. 8,821,541 which covers a suture anchor — similar to a dry-wall anchor, but sticks into flesh.

After Smith & Nephew filed its IPR petition Arthrex disclaimed the challenged claims. PTO rules state that “No inter partes review will be instituted based on disclaimed claims.” 37 C.F.R. €§ 42.107(e). And, following the rule, the PTAB (acting pre-institution on in the shoes of the PTO director) terminated the petition without instituting the IPR.


Estoppel is becoming more of a 'thing' in relation to PTAB nowadays. Consider this post titled "The PTAB Estoppel Keeping Patent Prosecutors Awake at Night". Does the author, Scott McKeown, think that people who are bullied using patents don't lose sleep or stay awake at night? Anyway, here is what he said: "Patent prosecutors might consider PTAB estoppel a pure post-grant concern. That is, a litigation issue restricted to district courts after a failed PTAB challenge, or an issue raised in the context of a second-bite at the PTAB apple. But, PTAB estoppel can effect both failed petitioners and unsuccessful patent owners. Patent owner estoppel, often overlooked, is only now beginning to impact patent prosecution."

It's a fairly new thing in this context. Expect this to be increasingly used to defang PTAB petitions.

Dennis Crouch has just mentioned bizarre if not laughable patents that PTAB belatedly tossed out:

Ex Parte Barrego, APPEAL 2016-006527 (PTAB January 2018). Barrego’s claim is directed to a roofing underlay with a number of features including “a pattern having the appearance of a shingled roof printed on at least one surface of the underlayment.” Here, the PTAB affirmed the indefiniteness rejection — finding that “one of ordinary skill would [not] be able to determine definitely whether many particular underlayment patterns do or do not have the appearance of a shingled roof.”


"Unfortunately, the patent microcosm relies on legalese to keep technical people out of the discussion, thus uninvolved or apathetic."This is actually a good thing, but not for the patent microcosm. Watchtroll just continues its ritualistic attacks on the integrity of PTAB (in order to help patent trolls) and although it habitually publishes something worth reading (e.g. [1, 2]) the site is polluted with ads, press releases and even pure puff pieces (like this borderline marketing from Dan Ovanezian and Scott Breining); no depth, classic fluff. We have chosen to keep an eye on Watchtroll (especially because of its attacks on PTAB and CAFC judges), but we prefer not to entertain it too much.

Unfortunately, the patent microcosm relies on legalese to keep technical people out of the discussion, thus uninvolved or apathetic. This is a problem we have been mentioning for years. Sadly, we need to adopt some of their own (often misleading) terms. It has become essential for communication.

Recent Techrights' Posts

Libya's Share on the Web: 5.2% GNU/Linux
GNU/Linux has hit an all-time high there
Codecs and Software Patents - Part VI - The European Patent Office, Nokia, Microsoft, Sisvel, and More
Whatever Nokia used to be, it's certainly not an ally and a lot of the turmoil at the EPO is the fault of companies like Nokia
 
Links 11/05/2026: The Solicitors Regulation Authority (SRA) Admits It Only Reacts When It's Too Late (Damage Already Done), Ombudsman’s Animal Cruelty HK Report
Links for the day
If It Takes You a Second to Serve (or Receive) a Page, That's Definitely Too Slow
For speeds at milliseconds (e.g. for pages to fully load in a tenth of a second) the pages must be ready to be sent as soon as they're requested
It's Not About Speed, It is About Patience and Adherence to Truth, Principles, Scientific Integrity
attacks on us only ever made us stronger - a lesson that our adversaries have learned the hard way
Cyber Show Does it Like Techrights: Static and Gemini Protocol as 'First-Class Citizen'
HTML and GemText (over Gemini Protocol) would be rendered in tandem
SLAPP Censorship - Part 73 Out of 200: Microsoft's Graveley and Garrett Remain Closely Connected in May 2026 ("Tag-Teaming" Against Bloggers in Another Continent)
The phrase "judge a person by their friends" seems applicable here
Discussions About When the Axe Falls at IBM/Kyndryl (11,000 Layoffs Estimated)
"Kyndryl restructuring should reduce overhead functions and reduce the number of managers that lack technical knowledge"
A World After Microsoft (and GAFAM) and After GitHub Shuts Down
the only growth area is debt
Fake News, Propaganda, and Misinformation: Microsoft Investing Money It Does Not Have in "Hey Hi" (for "Entertainment Purposes" Only)
This will not end well
Today the Whole European Patent Office (EPO) is on Strike and Next Monday an Even Bigger Strike
the media refuses to cover these and is thus complicit
The Corrupt Lecture the Non-Corrupt - Part IXX - EPO Management Speaks of Reputation and Integrity While Putting Cocaine Addicts in Management
If the EPO values its "reputation", then it needs to start by ousting the management
Over at Tux Machines...
GNU/Linux news for the past day
IRC Proceedings: Sunday, May 10, 2026
IRC logs for Sunday, May 10, 2026
Links 11/05/2026: Security Breaches, Politics, and Energy Crunch
Links for the day
Gemini Links 10/05/2026: "Accidental Cameras" and "Addictive" Interfaces in Social Control Media
Links for the day
Codecs and Software Patents - Part V - A Reminder That GAFAM and the European Patent Office (Which Serves American Monopolists) Do Considerable Harm to the Commons and Culture
some 'breaking' developments
Gemini Links 10/05/2026: Inkscape, Guix, and Alhena 5.5.8
Links for the day
The "Alicante Mafia" at the European Patent Office (EPO) Experiments With New Methods for Crushing Industrial Actions
Open letter to VP1 and the COO [...] What does this tell us about the status quo at the European Patent Office, Europe's second-largest institution?
The Corrupt Lecture the Non-Corrupt - Part XVIII - "The European Patent Office (EPO) has a zero-tolerance policy for fraud" (except when managers do it)
The guidebook of the EPO says fraud is not to be tolerated, but who enforces or revisits such "Red Lines"?
Links 10/05/2026: Hantavirus Brings Back 'Contact Tracing' Surveillance, "Staple Food Prices Soar in Iran"
Links for the day
Microsoft XBox Staff Know They're in Trouble, They Try to Unionise Ahead of Mass Layoffs
As the slang goes, it's going to be a "bloodbath"
Links 10/05/2026: Fake Suicide Notes and New EU Restrictions on Slop
Links for the day
SLAPP Censorship - Part 72 Out of 200: Microsoft's Graveley and Garrett Signed Documents That Hold Them Accountable to Truth and Liable for Lies
Such collaborations are unsavoury and apparently unprofessional, too
Over at Tux Machines...
GNU/Linux news for the past day
IRC Proceedings: Saturday, May 09, 2026
IRC logs for Saturday, May 09, 2026
Gemini Links 10/05/2026: Travelling to Van and "Dark Mode" as Passing Fad
Links for the day
IBM's Kyndryl Holdings Inc Sank 70-75% in 'Value' in 10 Months, Will IBM Follow?
Kyndryl Holdings Inc now has a debt considerably higher than this company is said to be 'worth'!
Belated Sovereignty: GNU/Linux in Iran Skyrockets to 6% Amid Armed Conflict
unless they're truly in control of their networks, hardware and software, somebody else can control them
Gemini Links 09/05/2026: Liberation, The Nocturnals, Rediscovering Internet Radio, and More
Links for the day
Links 09/05/2026: Kremlin’s Biggest Day of the Year and FBI's Attack on the Media (to Save Face)
Links for the day
Google is "Bullshit"
Fix your slop, Google. It's broken.
SLAPP Censorship - Part 71 Out of 200: 5RB Barristers Made Tens of Thousands of Pounds by Changing From Plural to Singular for Microsoft's Graveley and Garrett
Could not even get the client's name right
Links 09/05/2026: "Grand Theft Oil Futures" and Mass Layoffs at Verizon
Links for the day
Gemini Links 09/05/2026: Inkscape "Copy Text Style" and NomadNet
Links for the day
The Corrupt Lecture the Non-Corrupt - Part XVII - European Patent Office (EPO) Management Not Sharing Responsibility for Financial Resources
For those who wonder, EPO strikes are still going on
Over at Tux Machines...
GNU/Linux news for the past day
IRC Proceedings: Friday, May 08, 2026
IRC logs for Friday, May 08, 2026