Litigation

XR Communications, LLC v. Cisco Systems, Inc.

judgment

2:17-cv-02951

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Court: U.S. District Court for the Central District of California
Filed: 2017-04-19
Terminated: 2022-04-15

Patents at issue (3)

Plaintiffs (1)

π XR Communications, LLC

Defendants (1)

Δ Cisco Systems, Inc.

Summary

2017 Central District of California case asserting the '231 patent along with U.S. 7,062,296 and 7,729,728. Final judgment was entered for Cisco on April 15, 2022, on the pleadings of invalidity of the '231 patent based on collateral estoppel from the N.D. Cal. indefiniteness judgment.

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Record id: 6611231-2-17-cv-02951 · edit in Admin

Further reading

The patent litigation lifecycle
Most patent cases never reach trial. A defendant who understands the lifecycle makes better decisions about when to fight, when to settle, and when to invest in IPR — instead of overspending on whatever phase they happen to be in.
Prior-art research, old way vs new way — a side-by-side comparison
Defense is expensive because reading thousands of pages of patents takes time. AI doesn't change that for the lawyer's strategic work — but the time-on-pages part collapses by orders of magnitude.
How to read a patent claim
A patent has a 50-page specification, a fancy abstract, and a row of figures. Lawyers and courts look at none of that. They look at the claims.
Markman v. Westview Instruments, Inc. (1996)
Claim construction is exclusively the court's job. The Markman hearing is the most consequential single ruling in nearly every patent case — and a defendant's best chance to end the litigation before trial.
What is a patent troll?
Patent trolls are companies whose business is suing other companies. They make nothing, sell nothing, and add nothing — they collect old patents and use them to extract settlements from companies that actually do things.

All resources →