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◈ PRACTICE / PTAB PROCEEDINGS

Challenge.
Defend.
Both sides
of the PTAB.

We guide startups and mid-sized tech companies through proceedings before the Patent Trial and Appeal Board — inter partes review (IPR), post-grant review, and ex parte appeals — whether challenging a competitor's patent or defending your own.

// HOW WE DELIVER
ForumPTAB
Both sidesPetitioner · patent owner
Pairs withDistrict-court strategy
ConsultConnor — contested
WHY LYNCHWHAT WE DOFAQ
// 01 / WHY LYNCH

Prosecution + litigation, in one team.

Lynch LLP brings together expertise in both patent prosecution and litigation to deliver for our IPR clients. We pull from a deep well of prosecution knowledge alongside patent litigation experience — no matter what side of the proceeding you're on.

Each client's situation is unique. We tailor our services accordingly, stay current on PTAB developments, and prioritize personalized service throughout.

// 02 / WHAT WE DO

Petitioner or patent owner.
We've done both.

IPR is often a faster, lower-cost route to test patent validity than court — and the two frequently run together. If you're facing an infringement suit or weighing a challenge, we assess the options and build the strategy. On the PTAB, the process is the practice — here is what that looks like on each side.

◈ AS PETITIONER
Challenging a competitor's patent.
  • →Prior-art investigation and invalidity grounds
  • →Petition drafting with claim charts
  • →Expert declaration management
  • →Oral argument and trial advocacy
◈ AS PATENT OWNER
Defending your own portfolio.
  • →Preliminary response to deny institution
  • →Patent owner response and motions to amend
  • →Cross-examination of opposing experts
  • →Post-trial briefing through final written decision
// 03 / FAQ

Common questions.

Should we file an IPR or fight in court?
01
Often both — they run together and one shapes the other. We assess which fits your situation and coordinate the two.
Can you handle both sides?
02
Yes. Challenging a competitor's patent and defending your own are different jobs; we've done both.
Do you bring prosecution depth or just litigation?
03
Both, in one team — the prosecution view of how claims were built informs how we attack or defend them.
When should we talk to you?
04
Earlier is better, especially if you've been served — timing windows matter, and we'll walk you through yours.
// PORTFOLIO STRATEGIES

Post-grant work — APEX, IPR, and other PTAB matters — is scoped per matter as a phased budget rather than as part of a portfolio. For the patent and trademark side of your IP investment, the portfolio strategies page maps three illustrative paths.

PATENT & TRADEMARK PORTFOLIO STRATEGIES →BOOK A CONTESTED-PROCEEDINGS CONSULT →
◈ TALK TO US ABOUT THE PTAB

Facing an IPR?
Or filing one?

A conversation with Connor Lynch, the attorney who'll handle your matter. Book a consultation as early as tomorrow.

Book a PTAB consult →Read the blog
// FAQ

Frequently asked questions about ptab.

  • What is an inter partes review?
    An inter partes review (IPR) is an administrative proceeding before the Patent Trial and Appeal Board in which a party challenges the validity of an issued patent. It's typically faster and lower-cost than a district-court invalidity challenge but narrower in what it can rely on, and it has become a standard tool in patent disputes.
  • How does Lynch LLP approach IPR strategy?
    An IPR challenges an issued patent's validity on a limited set of grounds and on a timeline tied to any related litigation. Lynch LLP assesses IPR feasibility against the available prior-art record and coordinates it with district-court strategy where both are in play.
  • How long does an IPR take?
    An IPR runs on a defined schedule that is materially faster than full district-court invalidity proceedings — one of the main reasons accused infringers turn to it. Lynch LLP plans around that schedule and how it interacts with any parallel litigation.
  • What's the difference between IPR and litigation?
    An IPR is a narrower administrative proceeding decided by administrative judges; district-court patent litigation is the broader civil action covering infringement, validity, damages, and injunctive relief. The two often run in parallel, and a result in one forum can affect the other — Lynch LLP coordinates IPR and district-court strategy together.