Litigation

Prism Technologies LLC v. Adobe Systems Inc. et al.

judgment (non-infringement)

8:10-cv-00220-LES-TDT

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Court: United States District Court for the District of Nebraska
Filed: 2010-06-08
Terminated: 2012-12-10

Patents at issue (1)

Plaintiffs (1)

π Prism Technologies LLC

Defendants (11)

Summary

Prism asserted the '288 patent only. After two Markman rounds, the court entered final judgment on 2012-12-10 granting summary judgment of non-infringement for McAfee, Symantec, and Trend Micro; Mathworks was dismissed with prejudice, and invalidity counterclaims were dismissed.

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Record id: 7290288-8-10-cv-00220-les-tdt · edit in Admin

Further reading

The Patent Scam (2017): a documentary on the patent troll industry
Most people learn about patent trolls only when they get sued by one. The Patent Scam does the work of making the problem concrete before that happens.
Obviousness under § 103
Most patented inventions are combinations of existing ideas. The modern KSR standard makes those combinations easier to attack than they used to be.
How patent trolls operate (and why the business model works)
A junk patent generates settlement income exactly the same way as a strong one, because nobody pays $1M to test a $200k demand. The mechanics matter because the failure modes — what makes assertion campaigns expensive or risky for the troll — are exactly where defendants find leverage.
District court vs. PTAB: where to fight a patent challenge
Every defendant who actually fights a patent ends up choosing — sometimes implicitly — between district court invalidity, PTAB IPR, or both in parallel. The trade-offs are not symmetric; the choice often determines the case.
TC Heartland LLC v. Kraft Foods Group Brands LLC (2017)
Pre-TC Heartland, plaintiffs sued in plaintiff-friendly E.D. Tex. by default. Post-TC Heartland, venue is a real defense — and Delaware is where most U.S. patent cases land.

All resources →