PTAB 4 Years In: Don’t Estop Me Now

September 09 2016

The Federal Circuit this year has provided some guidance on how district courts should treat estoppel from Patent Trial and Appeal Board trials. This has made defendants less terrified about estoppel but many questions remain. Practitioners are also concerned about how confidential material is treated in district courts and the Board

Unlock this content.

The content you are trying to view is exclusive to our subscribers.

To unlock this content:

Take a Free Trial or Login

Topics

more from across site and SHARED ros bottom lb

More from across our site

Patents

King & Spalding adds yet another Winston litigator

Mike Rueckheim reunites with 12 of his former Winston & Strawn colleagues as King & Spalding continues aggressive hiring streak

Sanjana Mishra, March 17 2026

Sponsored content

Brand Protection Congress Europe: addressing counterfeiting and IP protection in the digital economy

As global commerce continues to expand through e-commerce platforms and digital marketplaces, protecting brands has become a growing challenge for organisations worldwide. Counterfeiting, intellectual property infringement, and online brand abuse are increasing across industries, making brand protection strategies a critical priority for businesses.

March 17 2026

Patents

‘A new approach’: How UPC opened the door to litigation insurance

Henrik Holzapfel and Chuck Larsen of McDermott Will & Schulte explain why a Court of Appeal ruling could promote access to justice and present a growth opportunity for litigation finance

March 17 2026

Trademarks

Arrow pointing upwards symbolizing business success growth, success, progress, improvement, achievement, increase, development, rise, profit, opportunity, advancement, expansion, prosperity

Cooley praises IP team after record London year

A co-partner in charge says the UK prosecution teams are a ‘vital’ part of the firm’s offering, while praising a key injunction win

Max Walters, March 16 2026

Trademarks

Sleepless nights: Premier Inn takes on Insomnia Cookies

A team from White & Case has checked in on behalf of Premier Inn Hotels in a UK trademark and passing off case against a cookie brand

March 16 2026

Patents

Lyft off: how pre-trial strategy drove Baker Botts’ damages success

Litigation team says pre-trial work and a Section 101 defence helped significantly limit damages payable by ride-sharing firm Lyft in patent case

Sanjana Mishra, March 16 2026

Trademarks

This week on MIP: Estée Lauder sues Jo Malone | easyGroup denied appeal

News of Avanci hiring a senior vice president and the EPO teaming up with a French AI startup were also among the top talking points

Max Walters, March 13 2026

Trademarks

How Temu helped the creators of Cyanide & Happiness fight against counterfeiters

Explosm, the independent Texas studio behind the hit webcomic Cyanide & Happiness, partnered with Temu’s IP protection team to combat counterfeiters infringing on its brand

March 12 2026

Patents

UPC update: CJEU set for UPC role | All along the Washtower

The latest in a dispute over juicing machines, and a shakeup in judicial compositions were also among the top developments

Max Walters, March 12 2026

Patents

‘No plans to scale down’: Pillsbury strengthens Tokyo presence with IP hire

Patent partner Robert Hollingshead explains why the firm remains committed to Japan despite several US firms exiting the Japanese and greater Asia market

Sukanya Sarkar, March 12 2026