1. Federal Jurisdiction and State Law Claims in IP Defense
District courts have exclusive jurisdiction over claims for relief arising under federal patent law under 28 U.S.C. § 1338(a). State courts cannot hear direct patent claims, but they retain jurisdiction over state-law claims involving contracts, trade secrets, and unfair competition. An international IP infringement defense law firm should distinguish federal patent counterclaims from related state-law contract, trade secret, or unfair competition claims.
District Court and ITC Remedies
District courts resolve patent claims by assessing damages and injunctive relief. In contrast, the U.S. International Trade Commission conducts Section 337 investigations regarding imported goods. ITC respondents may assert statutory defenses, but counterclaims are removed to district court without delaying the ITC investigation.
2. Settlement and Trial Analysis in Cross-Border Cases
Cross-border patent disputes require comparing settlement options against trial exposure. Settlement analysis may consider potential damages, discovery costs, and injunctive or import-related restrictions. Trial remains an option when infringement, validity, or damages remain disputed.
Domestic Commercial Activity and Offshore Assets
Patent liability depends on domestic acts such as making, using, selling, offering for sale, or importing products under 35 U.S.C. § 271. Enforcing a judgment against offshore assets may require recognition or enforcement proceedings under the law of the jurisdiction where the assets are located. Domestic distributors or local subsidiaries may present distinct contract issues.
3. Venue Rules and Transfer Motions for Foreign Defendants
Patent venue in federal court requires analyzing 28 U.S.C. § 1400(b), transfer principles, and personal jurisdiction. Section 1400(b) governs domestic defendants by looking to residence or acts of infringement alongside a regular and established place of business.
Venue Provisions for Non-Resident Foreign Entities
A defendant not resident in the United States may be sued in any judicial district under 28 U.S.C. § 1391(c)(3), subject to personal jurisdiction and other applicable procedural requirements. Defendants may request a transfer under 28 U.S.C. § 1404(a) when another district is substantially more convenient.
| Defense Consideration | District Court Action | ITC Section 337 Investigation |
|---|---|---|
| Primary Remedy Sought | Monetary damages and injunctions | Exclusion orders blocking imports |
| Proceeding Nature | Federal civil litigation under FRCP | Expedited administrative investigation |
| Counterclaim Handling | Adjudicated under FRCP | Removed to district court |
Primary Remedy Sought
- District Court ActionMonetary damages and injunctions
- ITC Section 337 InvestigationExclusion orders blocking imports
Proceeding Nature
- District Court ActionFederal civil litigation under FRCP
- ITC Section 337 InvestigationExpedited administrative investigation
Counterclaim Handling
- District Court ActionAdjudicated under FRCP
- ITC Section 337 InvestigationRemoved to district court
4. Entity Liability and Supply Chain Indemnification
Patent claims against a corporation do not automatically establish liability for its officers, shareholders, or foreign parent. The analysis should distinguish each person's alleged infringement or inducement from any separate theory for disregarding corporate separateness.
Contractual Supply Chain Allocations
Supply chain agreements allocate defense costs, notice duties, and indemnity obligations. Parties should review supply agreements to determine notice, defense, and Indemnification Claims obligations under actual contract terms rather than assuming responsibilities from commercial relationships alone.
5. Invalidity Counterclaims, Declaratory Relief, and PTAB Review
Defendants may assert affirmative defenses and counterclaims challenging patent validity and enforceability under Patent Law. Counterclaims and parallel proceedings may provide separate procedural avenues for presenting non-infringement or invalidity arguments.
Declaratory Judgment Jurisdiction and Actual Controversy
A declaratory judgment action requires an actual Article III controversy. A demand letter does not create jurisdiction in every case. Filing first does not guarantee that the chosen forum retains the dispute if venue or transfer rules dictate otherwise.
Inter Partes Review and Parallel Litigation
An IPR petition generally must be filed within one year after the petitioner, real party in interest, or privy is served with a complaint alleging infringement of the patent under 35 U.S.C. § 315(b). Filing an IPR petition does not automatically stay litigation, as the court determines whether a stay is appropriate.
6. Co-Counsel Coordination and Injunction Defense
Plaintiffs seeking preliminary injunctive relief must satisfy federal equitable standards. A defendant may contest likelihood of success by raising substantial questions of infringement or validity and may also challenge irreparable harm, the balance of equities, or the public interest. Rule 65(c) generally requires security in an amount the court considers proper when granting preliminary Injunctive Relief.
18 Aug, 2026
