Patent Trolls Cost Defendants $29 Billion Per Year
67% of all US patent litigation is brought by Non-Practicing Entities — companies that own patents but make nothing. They exist purely to extract settlements. The cost falls on companies that actually build things.
$29BAnnual NPE cost to US defendants
67%Of all patent litigation from NPEs
$500KMedian NPE settlement (vs. $3-5M to litigate)
East TexasForum: 40% of all US patent cases until 2017
Choose your depth. The data doesn't change — just the explanation.
A "patent troll" is a company that buys patents for things they never built and then sues other companies who are actually making products. They don't invent anything — they just own pieces of paper that say someone else invented something, then use those papers to collect money. Two-thirds of all patent lawsuits in the US are brought by these trolls. It costs $29 billion a year — money that could be going into actual new inventions.
Non-Practicing Entities (NPEs), colloquially "patent trolls," are companies that hold patents but do not manufacture products or provide services based on them. They acquire patents (often from bankrupt companies, individual inventors, or patent aggregators) and send demand letters or file lawsuits against operating companies. The business model works because: (1) defense costs $3-5M to trial, (2) NPEs have nothing to counter-sue for, so settlements of $500K-2M are economically rational. Bessen & Meurer estimated $29B annual direct cost; indirect costs (diverted R&D, design-arounds) are higher.
Bessen, Ford & Meurer (2011) foundational study: NPE defendants lost $500B in wealth 1990-2010. Updated 2014 estimate: $29B annual direct cost. Patent assertion entity (PAE) subcategory: pure patent assertion funds backed by hedge funds/private equity. Major players: Acacia Research, InterDigital, Vringo/FORM Holdings, IP Edge LLC. TC Heartland (2017 SCOTUS): mandatory patent venue in defendant's home state — reduced East Texas dominance (Marshall division had 44% of patent cases at peak). AIA (2012) IPR inter partes review: faster/cheaper patent invalidity challenge mechanism, partially checked NPE power. NPE prevalence by sector: software patents highest NPE target (vague claim language amenable to broad interpretation). Alice Corp. v. CLS Bank (2014): software patent eligibility constraints reduced some NPE ammunition.
Why defendants pay trolls even with strong defenses
Patent Litigation Volume Trend (US, 2000-2023)
Case filings by NPE vs. operating company plaintiffs
🏛️ East Texas — The Troll's Favorite Courthouse
Until the 2017 TC Heartland Supreme Court decision, patent trolls could sue anywhere in the US — and they overwhelmingly chose the Eastern District of Texas, specifically the Marshall Division. Why? Local juries were historically sympathetic to patent holders. The courthouse had a "rocket docket" — fast trial dates that didn't give defendants time to mount full defenses. And there was no tech industry concentration, so jurors weren't inclined to favor tech companies. At peak, this small courthouse in Marshall, Texas (population 24,000) was handling 44% of all US patent cases. The Supreme Court fixed the venue problem in 2017, but NPEs adapted. They're still here.