Welcome to Perkins Coie’s post-grant resource library. Explore in-depth analysis, original research, and guides on the developing procedures for challenging the validity of a patent granted by the U.S. Patent and Trademark Office.  

Thumbnail_Post-Grant Resources: IPR>>IRL


How do inter partes reviews work in real life? Our brief guide breaks down the IPR process and suggests basic strategies for challengers and patent owners.

View our IPR >> IRL Guide

IPR Evolution

A one-stop collection of insights and research on noteworthy decisions and practical effects for parties and attorneys involved with inter partes reviews. Volume 1, March 2020.

Review our IPR Evolution Publication


IPRs + Prior Art (Part 1)

Proving up prior art when working with publications has been complicated and unpredictable. In this two-part series, we look at varying opinions from Patent Trial and Appeal Board panels and issues triggered by Hulu, LLC v. Sound View Innovations, LLC.

Read Part One

IPRs + Prior Art (Part 2)

Our follow-up prior art article considers the PTAB’s precedential opinion in Hulu and its implications for practitioners.

Read Part Two

IPR Bites of the Apple Cover Image

IPRs + Multiple Petitions

When multiple inter partes review petitions are filed against the same patent, what result can you expect? We analyze recent developments on serial and parallel IPR petitions and offer practical tips.

View our IPRs + Multiple Petitions Guide

U.S. Supreme Court’s SAS Decision

Did the SAS Institute Inc. v. Iancu ruling change the PTAB's approach to institution of IPRs? Our original research examines the aftereffect of the Court's decision.

Examine our U.S. Supreme Court’s SAS Decision Research

How the Inter Partes Review (IPR) Works

Animated Short Walks Viewer Through Complexities of New USPTO Process. To help explain the complexities of the United States Patent & Trademark Office’s new inter partes review (IPR) process, Perkins Coie has developed a short animated video that walks viewers step-by-step through the entire process.

Post Issuance Procedure Matrix

Not sure which path is right for you? Take a look at our Post Issuance Procedure Matrix and learn the differences between your options.

Click the below chart to view a full screen version.
Post Issuance Procedure Matrix


IPR@5: Fifth Anniversary Report

A reflective analysis into five years of IPR practice.




IPR@4: Fourth Anniversary Report

An in-depth look at factors affecting your IPR strategy.





IPR@3: Third Anniversary Report

A look into IPR statistics and their impact on IPR strategy.



1600 PTAB & Beyond

1600 PTAB & Beyond blog image

Significant Patent Decisions and Developments Affecting the Life Sciences Industry

Perkins Coie’s 1600 PTAB and Beyond blog reports from the intersection of the life sciences industry and key decisions and developments from the Patent Trial and Appeal Board (PTAB), district courts and appellate courts. We focus on IP analyses and insights within a practical and actionable context. 

Subscribe to the 1600 PTAB Blog here.