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

"EU's reform agenda threatens to erase a decade of digital rights"
This is really sad for those of us who spent decades promoting and boosting/advocating the EU
IBM Layoffs in India, More Coming Soon, Say Apparent Insiders
Threads regarding IBM layoffs
Gemini Links 29/12/2025: Earlier "Happy New Year 2026" and "Dead Archivist Society"
Links for the day
Links 29/12/2025: Putin Critic Sergei Udaltsov Imprisoned, Cloudflare’s Outages Discussed
Links for the day
LLMs Are Inherently Parasitic, We Need to Treat Them Accordingly
a maintenance burden for those who possess actual intelligence
Links 29/12/2025: Bottled Water Considered Harmful, Cheetos Promoting Nazis in Europe
Links for the day
EPO People Power - Part XVIII - European Patent Office "Paints Itself as Progressive While Literally Being Represented by Cokeheads"
To what length/s will German authorities and media (not just in Germany) go to protect the EPO's "precious image"?
What IBM Will Do to Red Hat in the Coming Year or Years
This won't end up well for GNU/Linux as a whole
Not Turning in His Grave: When People Die, Their Corporate Destruction Becomes a "Turnaround"
All he did was mass layoffs - a tradition that has not ended since then
Over at Tux Machines...
GNU/Linux news for the past day
IRC Proceedings: Sunday, December 28, 2025
IRC logs for Sunday, December 28, 2025
Louis Gerstner Has Died, His Legacy of Mass Layoffs at IBM Hasn't
Hagiographies will follow. They will say he "saved" IBM.
Links 29/12/2025: The Sunday Routine, Limits of Memory, and Gemini Vocabulary
Links for the day
Doxing is Illegal in the UK (Even If You're Based in the US)
Somebody has just added my identity (name, mugshot etc.) to a "hitlist" site of a political nature, pandering to violent people
Misunderstood Weapons of Censorship
It's cruel world out there. One needs to be aware of these shady activities, including "censorship-as-a-service".
Google Confidently Wrong, Nowadays Defaming People Too
I can relate as people did this to me and to my wife
What Happens When Americans Are Out of Office (Away From Work) for a Week? Vista 11 "Share" Falls to Just 10%.
How's that for slow adoption?
2026 Will Have EPO Focus, People Will See What the EPO is Trying to Hide
We certainly hope people will be held accountable
EPO People Power - Part XVII - Drugged, Stoned, and Drunk at the Office During Working Hours (Campinos Friend and Propaganda Chief Has Long Done This)
It's a total disgrace that press all over Europe is still trying to cover this up!
Gemini Links 28/12/2025: Health Ordeals and Discontinued Pedals
Links for the day
Slop About "Linux" Came Only From One Slopfarm This Weekend
Another day has passed with no LLM slop found in our RSS feeds
Links 28/12/2025: 'Digital Detox' and Slop "Backlash Grew Massively in 2025"
Links for the day
Links 28/12/2025: "Mass Quitting Apple" and "Generative AI Industry is Fraudulent, Immoral and Dangerous"
Links for the day
Links 28/12/2025: Fascination, Holidays, and Mormonism
Links for the day
Microsoft's Weapon Against the Reality of XBox (the Console) Dying Seems to be LLM Slop
XBox is dead/dying
Raffles for the Immaterial: Unauthorised Bingo for Red Hat "Vouchers"
This is IBM and some slop images
Andy Farnell on Standing Up Against Technological Oppression
some portions from it
Over at Tux Machines...
GNU/Linux news for the past day
IRC Proceedings: Saturday, December 27, 2025
IRC logs for Saturday, December 27, 2025
Once Again, GAFAM Deletes All Your Data, Only Corrects This After Millions of People Lead an Uproar Online ("Richard Stallman Warned Us About This")
No lessons learned, eh?
Linus Torvalds Blasts Software Freedom Conservancy (SFC) for Attempting to 'Protect' Linux
Like it 'protects' women
New Record for GNU/Linux in Australia (at Microsoft's Expense)
Windows is at an all-time low, GNU/Linux... all-time high
Fighting Over Whose Pockets Are Deeper (or Who Borrows More Money)
When processes favour those who are more wealthy (or more willing to go into infinite debt or steal money of other people) those processes match the attributes of lawfare rather than law
You Know Your Critics Are Jealous and Have Inferiority Complex When...
One day we'll write about all this in great depth
Starting a Book With a Flawed Premise or Weak Hypothesis
To me, Schneier is a sort of "RMS of sec"
Microsoft's Mass Layoffs (30,000+ in 2025) Not About "AI", Just Business Failure
"AI" is replacing... the old excuses for mass layoffs
"But Corruption is Everywhere"
"We'll always have Polio..."
EPO People Power - Part XVI - Berenguer Does Not Speak German, So What Did He Tell German Police That Busted Him?
based in Germany and does not speak the language
Challenges for EPO Insiders to Try to Tackle in 2026
Nothing will get solved as long as the circus that runs this show tries to keep the circus going
Days Without Slop About "Linux"
It's time to move on
Links 27/12/2025: Canada Post Strike Called Off, Debate About Europeans "Working Over Christmas"
Links for the day
Gemini Links 27/12/2025: Household Appliances and Flight Fright
Links for the day
Links 27/12/2025: US Cracking Down on Whistleblowers, Expanding Bombardment Campaigns Worldwide
Links for the day
Resuming EPO Coverage Today, Can António Campinos 'Survive' Cocainegate?
We said we'd continue in the weekend
Links 27/12/2025: More Attacks on Media (Meduza Co-founder Sentenced to Prison in Absentia), "What Owning Music Means To Me"
Links for the day
Gemini Links 27/12/2025: geminiprotocol.net Downtime and Capsular Gemlog Manager
Links for the day
Over at Tux Machines...
GNU/Linux news for the past day
IRC Proceedings: Friday, December 26, 2025
IRC logs for Friday, December 26, 2025