Intellectual Property Litigation Law Firm
Focused representation in patent, trademark, copyright, trade secret, licensing, NDA, and Federal Circuit disputes.
Intellectual Property Counsel
Keyhani LLC is an intellectual property law firm based in Washington, DC, representing U.S. and international clients. Its practice encompasses federal litigation, IP consulting, licensing, transactional work, mediation, and arbitration.
Federal Litigation
Representation in patent, trademark, copyright, trade secret, and related commercial disputes, including Federal Circuit appeals.
IP Agreements and Advice
Counsel on intellectual property licensing, agreements, and transactions.
Mediation and Arbitration
Representation in mediation and arbitration involving intellectual property and related commercial matters.
Intellectual property disputes the firm handles.
The firm litigates disputes and provides advisement over existing intellectual property rights, licenses and agreements, proprietary information, and court and appellate proceedings. Our practice areas are reflected below.
Patent Litigation
Federal patent disputes involving infringement, claim construction, venue, damages, injunctions, pharmaceutical patents, and appellate preservation.
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Federal Circuit Appeals
Appeals involving claim construction, dispositive rulings, final written decisions, injunctions, damages, and preserved trial issues.
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Trademark Litigation
Trademark infringement, trade dress, dilution, false association, unfair competition, marketplace, packaging, and brand disputes.
View trademark litigation
Copyright Litigation
Disputes involving software, images, packaging, music, creative works, digital content, DMCA issues, and fair use.
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Trade Secret Litigation
Misappropriation, source code, customer information, employee departures, confidentiality obligations, and emergency relief.
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IP Licensing
Structuring and negotiating IP license agreements, and enforcing or defending disputes over royalties, scope, breach, and termination.
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IP Consulting
Infringement assessments, cease-and-desist strategy, freedom-to-operate reviews, and pre-litigation planning for IP owners and accused companies.
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NDA Breach Litigation
Enforcing and defending non-disclosure and confidentiality agreements, including disputes over unauthorized use or disclosure and emergency relief.
View NDA breach litigationAttorney-led IP litigation representation.
Clients work with a focused litigation team led by attorneys whose credentials and experience are tied to federal IP disputes, for both plaintiffs and defendants, for all stages of litigation including pleadings, discovery, claim construction, expert discovery, trials, Federal Circuit appeals, arbitration, and settlement.
Darius Keyhani
Darius Keyhani brings 20+ years of IP litigation experience, 80+ federal cases as lead counsel, Federal Circuit experience, U.S. Supreme Court bar admission, and an LL.M. from NYU School of Law.
View Darius KeyhaniFrances Stephenson
Frances Stephenson is a member of Keyhani LLC. Her verified credentials include a J.D. magna cum laude from SUNY Buffalo School of Law, selection as one of six Research and Writing Fellows, and New York bar admission.
View Frances StephensonA nationwide Federal IP litigation practice
From its Washington, DC office, Keyhani LLC represents U.S. and international clients in federal IP disputes in courts nationwide, appearing pro hac vice with local counsel where a court requires it.
Washington, DC
Principal office at 1050 30th Street NW, Washington, DC 20007.
Nationwide representation
The firm litigates disputes nationwide for clients around the world.
Federal Circuit
Federal Circuit appellate experience supports appeal-aware strategy in patent and related IP litigation.
Questions before contacting the firm.
Short answers for scope, court coverage, and how to begin a case evaluation.
How do I know whether my matter fits Keyhani LLC?
Keyhani LLC evaluates whether the dispute involves IP rights, confidential information, an agreement, a court filing, an appeal deadline, or a business conflict with an IP connection.
What kinds of IP disputes does the firm litigate?
The firm handles patent, trademark, copyright, trade secret, IP licensing, NDA breach, pharmaceutical patent, Federal Circuit, and related commercial/IP disputes.
What courts and markets does Keyhani LLC serve?
Keyhani LLC represents clients in federal courts nationwide and serves international clients, working from its Washington, DC office. Where a matter is in another court, the firm appears pro hac vice with local counsel as required.
How do I start a case evaluation?
Contact the firm with the demand letter, complaint, order, agreement, deadlines, key documents, and a short description of the business issue.
Discuss your IP matter with litigation counsel.
If your matter involves a patent, trademark, copyright, trade secret, IP agreement, NDA, court filing, or Federal Circuit appeal, contact the firm to discuss the dispute and the next litigation step.