Comprehensive Overview of U.S. Patent Enforcement and Litigation Procedures in 2026

Patent enforcement in the United States in 2026 can be pursued through U.S. district courts or, under limited circumstances, the U.S. International Trade Commission (ITC). Patent owners may bring actions in any state where the accused infringer has engaged in continuous and systematic activities or committed a specific act of infringement. The ITC’s jurisdiction applies primarily to imported infringing articles when a domestic industry exists for the patented product.

Patent owners have discretion in selecting the tribunal to enforce their patents, influenced by factors such as cost, case duration, and available remedies. ITC proceedings typically conclude within eight to nine months but tend to be more expensive than district court litigation. While district courts can award damages and injunctions, the ITC cannot grant damages but may issue exclusion orders and cease-and-desist orders to block importation of infringing articles.

Alternative dispute resolution (ADR) is not mandated by law before initiating patent litigation, though prior agreements between parties may require it. ADR, including mediation and arbitration, is commonly viewed as a beneficial tool to resolve disputes efficiently. Some U.S. district courts encourage parties to consider ADR by requesting statements on its potential usefulness.

In patent litigation, corporations must be represented by counsel, whereas individuals may proceed pro se, although this is generally discouraged due to the complexity of patent law. Most parties retain attorneys experienced in patent disputes and familiar with the specific forum.

Commencement of a patent infringement action in U.S. district courts requires serving the accused infringer with a summons and complaint, which must satisfy pleading standards and be accompanied by a $350 filing fee. Additional nominal fees apply for service of process. The pre-trial period varies by court but generally ranges from nine months to two years.

The ITC may initiate investigations on its own or upon a patent owner’s complaint, with pre-trial proceedings typically completed within five months of investigation commencement.

Before litigation begins, parties generally cannot compel document production from adversaries. Once proceedings commence, parties must exchange initial disclosures identifying individuals with relevant information, documents supporting their claims, damage computations, and applicable insurance agreements. Local patent rules often impose further disclosure obligations.

Discovery in patent cases permits obtaining any non-privileged, relevant information proportional to the case’s needs. Courts assess proportionality based on factors including issue importance, amount in controversy, parties’ access to information and resources, discovery’s role in resolving issues, and the burden or expense relative to its benefit.

Non-parties may be compelled to provide discovery through subpoenas. If a party or non-party fails to comply with discovery requests after notice and attempts to confer, the requesting party may file a motion to compel with the court.

Pre-trial procedures vary across courts, with many U.S. district courts adopting local patent rules to standardize and streamline the process. Technical evidence is typically produced during this phase, although specific practices depend on the forum.

This comprehensive framework guides patent owners and accused infringers through enforcement, dispute resolution, procedural requirements, and discovery in U.S. patent litigation as of 2026.