Patent Infringement Litigation Counsel
Keyhani LLC represents patent owners and accused infringers in federal district-court patent litigation, with claim construction, damages, venue, settlement leverage, and Federal Circuit preservation considered from the beginning.
Patent Owners
Enforcement strategy, claim charts, venue, remedies, and settlement leverage.
Accused Infringers
Demand response, defenses, willfulness control, and business continuity.
District Court
Complaint, answer, claim construction, discovery, experts, motions, and trial posture.
Federal Circuit
Appeal preservation built into district-court positions and record development.
Patent Infringement Counsel for Federal District Court Disputes
Patent infringement cases are decided through the facts of the accused product, the asserted claims, the forum, the available defenses, and the business objective.
For Patent Owners
Patent owners need to know whether the accused product reads on the asserted claims, whether the patent can withstand invalidity challenges, what damages theory is realistic, and whether injunction pressure is available.
- Claim charts and infringement theory
- Venue and defendant structure
- Damages, licensing leverage, and injunction posture
- Federal Circuit preservation from the district-court record
For Accused Infringers
Accused businesses need to assess noninfringement, invalidity, venue, willfulness, commercial exposure, document preservation, and whether a parallel patent-office challenge may affect the district-court case.
- Demand-letter and complaint response strategy
- Noninfringement and invalidity defenses
- Willfulness and damages-risk control
- Settlement posture and business continuity
Litigation Issues That Shape the Case
Doctrine matters when it changes the business decision. These are the questions that usually affect leverage, exposure, and timing.
Claim Construction
Which disputed terms affect liability, invalidity, damages, and appeal posture?
Defenses and Counterclaims
Which noninfringement, invalidity, unenforceability, or declaratory positions are supportable?
Damages and Remedies
Does the matter turn on royalty, lost profits, willfulness, injunction pressure, or settlement leverage?
IPR Interaction
Could a patent-office challenge affect stays, estoppel, claim construction, or settlement posture?
Pharmaceutical Patents
Do Hatch-Waxman, ANDA, biosimilar, or launch-timing factors change the litigation plan?
Appeal Preservation
What objections, expert rulings, proposed constructions, and remedy arguments need to be preserved?
How Keyhani LLC Builds the Patent Litigation Posture
The work starts with the asserted claims, accused product, forum, deadline, and business pressure, then builds toward the next litigation decision.
Define the right and accused conduct
Identify the asserted patent, accused product or process, demand history, business objective, and forum posture.
Test the claim construction pressure points
Find the disputed terms that change liability, invalidity, damages, injunction exposure, and appeal risk.
Align proof with the business objective
Owners and accused businesses need different proof, remedies, settlement posture, and timing decisions.
Preserve the record for the next forum
Patent disputes can move from district court to the Federal Circuit, so the record must be built with that possibility in mind.
District-court patent litigation with Federal Circuit preservation
Keyhani LLC serves clients from its Washington, DC office in patent disputes connected to New Jersey, New York Metro, Washington, DC, Northern Virginia, and federal forums where appropriate appearance procedures support the matter.
Darius Keyhani
Darius Keyhani is the founder and lead counsel of Keyhani LLC. His verified credentials include 20+ years of IP litigation experience, 80+ federal cases as lead counsel, Federal Circuit admission, U.S. Supreme Court bar admission, an LL.M. from NYU School of Law, and founding editor experience with the SUNY Buffalo Intellectual Property Law Journal.
Patent and IP disputes connected to infringement litigation
Patent infringement disputes often touch appeal strategy, broader federal IP litigation, and pharmaceutical patent disputes.
Patent Infringement Litigation FAQ
Short answers for owners and accused businesses deciding whether to contact litigation counsel.
Can Keyhani LLC represent either side?
Yes. Keyhani LLC represents patent owners enforcing patent rights and accused infringers responding to demands, complaints, injunction threats, licensing pressure, or district-court patent claims.
When should counsel be involved?
Counsel should be involved as soon as a demand letter, complaint, product launch conflict, licensing threat, or infringement analysis creates litigation risk.
Does Keyhani LLC handle IPR or PTAB proceedings as a standalone service?
No standalone PTAB trial service is presented here. IPR and PTAB activity may affect district-court litigation through stays, estoppel, claim construction alignment, and settlement posture.
What is the first case evaluation focused on?
The first evaluation usually focuses on the patent, accused product, forum, deadlines, claim construction pressure points, damages or injunction exposure, and business objective.
Discuss Your Patent Infringement Matter
If your company is enforcing patent rights or responding to an infringement demand, complaint, injunction threat, or Federal Circuit-sensitive district-court ruling, contact Keyhani LLC to evaluate the litigation posture and next step.