Interactive Tool
Patent Litigation Cost Estimator
Estimate the cost of patent litigation based on AIPLA Economic Survey data. Adjust the amount in controversy, venue, litigation phase, and number of patents to see projected costs per side, including a breakdown by expense category and PTAB/IPR comparison.
What Drives Patent Litigation Costs
Patent litigation is among the most expensive forms of civil litigation in the United States. According to the AIPLA Economic Survey, total costs per side range from $600,000 for cases with less than $1 million at risk to over $3.6 million for cases exceeding $25 million. Four factors dominate the total:
Attorney Fees (60–70%)
Hourly rates range from $400 to $1,200 depending on firm size and geography. Senior partner time during trial preparation and Markman hearings drives the largest share.
Expert Witnesses (15–20%)
Technical and damages experts charge $300–$800/hour for preparation and $5,000–$15,000/day for trial testimony. Complex cases may require 3–5 experts.
E-Discovery (10–15%)
Document review alone accounts for 70–80% of discovery spend. AI-powered review tools are reducing this cost by up to 67% at leading firms.
Court & Filing Costs
Filing fees, motion costs, hearing transcripts, and trial graphics. Typically less than 5% of total but can add up in multi-patent cases.
Cost Benchmarks by Amount in Controversy
The AIPLA Economic Survey provides the authoritative cost benchmarks for U.S. patent litigation, broken down by the amount at stake:
| Amount at Risk | Through Discovery | Through Trial |
|---|---|---|
| Under $1M | $300K | $600–700K |
| $1M–$10M | $600K | $1M |
| $10M–$25M | $1.5M | $3M |
| Over $25M | $1.5M | $3.6M+ |
Venue Selection & Timeline
Where you litigate significantly affects both cost and timeline. The Eastern District of Texas handles 27.7% of all patent cases nationally, with a median time to trial of approximately 24 months. The District of Delaware, at 11.4% share, takes nearly twice as long at 44 months—driving higher total costs through extended discovery and expert phases.
ITC Section 337 investigations offer the fastest path (15–18 months) but come with higher intensity: approximately 45% of cases go to hearing compared to less than 5% in district court. The remedy is an exclusion order blocking imports, not monetary damages.
The PTAB Alternative
Inter partes review (IPR) at the Patent Trial and Appeal Board offers a lower-cost alternative for challenging patent validity. At $300,000–$600,000 per petition, IPR costs 70–85% less than full district court litigation. The statutory timeline is 12–18 months, and 76.56% of instituted claims are ultimately cancelled.
However, IPR institution rates have declined to approximately 56% in FY2026, with record discretionary denials. As a result, ex parte reexamination filings surged 66% in 2025 as practitioners sought alternative invalidity pathways.
Settlement Economics
Over 75% of patent disputes settle before trial, with 40% settling within the first year. Early settlement typically captures only 30–40% of through-trial costs, making it the most cost-effective resolution for cases without strong damages potential. Third-party litigation funding now backs an estimated 50–75% of patent lawsuits against major tech companies, fundamentally changing settlement dynamics.
For a deeper analysis of litigation costs, venue strategy, and cost reduction techniques, see our comprehensive patent litigation cost guide.