Experience and Results
Darius Keyhani has 20+ years of IP litigation experience, has served as lead counsel in 80+ federal cases, and has Federal Circuit appellate experience.
Representative Results
Keyhani LLC has obtained winning outcomes as lead litigation and trial counsel for both plaintiffs and defendants. The following are representative, presented at a category level without naming clients or specific matters. Non-confidential details of particular cases can be provided to prospective clients on request.
As lead counsel for plaintiffs — pre-trial
- Prevailed on personal jurisdiction challenges
- Prevailed on venue and forum non conveniens challenges
- Prevailed against Rule 12(b)(6) motions to dismiss
- Obtained temporary restraining orders (TROs) and preliminary injunctions
- Prevailed on material claim-construction terms at Markman hearings
- Prevailed on, and defeated, motions to compel discovery
- Prevailed on Daubert challenges to expert testimony
- Obtained summary judgment of patent infringement
- Obtained summary judgment of willful patent infringement (treble damages)
- Defeated motions for summary judgment of patent non-infringement and of invalidity
Judgments and jury verdicts
- Multiple damages judgments exceeding $1 million
- Judgments of attorney's fees and costs in patent, trademark, and copyright infringement claims
- A jury verdict of patent infringement on all asserted claims against all accused products, against a Fortune 500 company
Appeals and arbitration
- Reversal at the Federal Circuit of summary judgment of non-infringement, against Fortune 500 companies
- Prevailed on IP and commercial-law claims before the American Arbitration Association
As lead counsel for defendants
- Prevailed on declaratory-judgment actions
- Dissolved TROs and defeated motions for preliminary injunctions
- Dismissal of multimillion-dollar patent infringement claims, with no payment to the claimant
- Dismissal of multimillion-dollar trade secret misappropriation claims, with no payment to the claimant
- Dismissal of a multimillion-dollar copyright infringement claim, with no payment to the claimant
- Dismissal of breach-of-contract, trademark infringement, and copyright infringement claims, with no payment to the claimant
As lead negotiator
- Secured dozens of favorable settlements in patent, trade secret, copyright, and trademark matters, on both the plaintiff and defendant sides
Past results do not guarantee future outcomes, as each case may present different facts and circumstances.
The forums behind these results
These matters were litigated in the following federal courts: SDNY, EDNY, WDNY, the Eastern and Western Districts of Texas, the Central and Northern Districts of California, the Middle and Southern Districts of Florida, the District of New Jersey, the District of Nevada, the Western District of Pennsylvania, the Northern District of Ohio, the District of Hawaii, and the Federal Circuit Court of Appeals. The arbitration matter was administered by the American Arbitration Association.
Keyhani LLC is litigation-led and also handles IP consulting, licensing, transactional work, and mediation and arbitration.
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