1. What Must a Company Do When Patent Litigation Begins?
Start by separating federal litigation duties from foreign court and patent-office deadlines. A global dispute rarely runs on one calendar, especially after parallel actions begin.
Preserve the Technical Record Early
When litigation is reasonably anticipated, preserve key evidence. Patent disputes can put source code, design files, product records, prior art, sales data, and internal communications in play.
- Identify key custodians and data sources.
- Suspend routine deletion of relevant material.
- Record preservation and collection steps.
Build a Forum-by-Forum Calendar
Federal cases, PTAB review, EPO proceedings, and national actions follow different rules. Treating them as one case can hide a critical deadline.
- Track each filing and response date for each active forum.
- Assign responsibility for every forum.
- Compare positions before making technical admissions.
2. How Should Discovery Be Managed Across Borders?
Federal discovery can reach technical, financial, and communication records. Foreign data rules may affect collection abroad.
Keep U.S. Discovery Tied to the Case
Patent infringement litigation may require source code, design records, sales data, and prior art. Collection should stay focused on disputed claims and defenses.
- Map requests to claims and defenses.
- Use court procedures to protect sensitive technology.
- Identify foreign collection limits early in each active jurisdiction.
Keep Positions Consistent Across Forums
A claim-construction argument may affect PTAB strategy or a foreign validity position. Teams should compare key submissions before filing.
- Maintain one chart of asserted claims and prior art.
- Check translations of important patent terms.
- Flag statements that may affect another proceeding.
3. When Should Ipr and Invalidity Strategy Be Set?
An accused infringer should assess invalidity early because court defenses and PTAB review run on separate tracks. Missing a PTAB deadline can remove an option.
Ipr Has Its Own Statutory Clock
Under 35 U.S.C. §315(b), IPR generally cannot be instituted on a petition filed more than one year after service of an infringement complaint on the petitioner, real party in interest, or privy. Section 315(c) separately addresses joinder.
- Calendar the one-year bar after service.
- Review prior art before selecting petition grounds.
- Coordinate IPR with intellectual property litigation positions.
The Patent Owner Has a Separate Response Period
A patent owner may file a preliminary response within three months after the PTAB issues its Notice of Filing Date Accorded. This differs from the petitioner's §315(b) deadline.
- Separate petitioner and patent-owner deadlines.
- Use the preliminary response to address institution issues.
- Track foreign validity proceedings on separate calendars for each forum.
4. How Do U.S. and European Patent Challenges Differ?
PTAB IPR and EPO opposition differ in timing, procedure, and governing law.
Use the Correct Procedure for Each Forum
| Forum | Procedure | Key Timing Point |
|---|---|---|
| PTAB | IPR petition | §315(b) one-year bar may apply |
| PTAB | Patent owner preliminary response | Three months from filing-date notice |
| EPO | Opposition | Nine months from mention of grant |
| WIPO | PCT administration | Not a centralized patent opposition forum |
Do Not Collapse Wipo and Epo Procedures
Article 99 EPC generally gives nine months from publication of the mention of grant to file an EPO opposition. WIPO administers the PCT but does not operate an EPO-style patent opposition procedure.
- Track EPO opposition separately from IPR.
- Use national or regional validity procedures where required.
- Coordinate patent filings with enforcement planning.
5. How Should Interim Relief and Settlement Be Handled?
A patent dispute can affect a product launch before trial. Interim relief and settlement need a record that fits the forum and commercial problem.
Rule 65 Relief Requires Focused Evidence
Federal Rule of Civil Procedure 65 governs injunctions and TROs. Preliminary injunctions require notice, and Rule 65(c) governs security.
- Prepare infringement and validity evidence early.
- Address irreparable harm and the injunction factors.
- Check foreign interim-relief rules separately.
Licensing Terms Need a Compliance Plan
A settlement may include licenses, cross-licenses, royalties, or patent transfers. A patent license does not automatically trigger merger-control reporting; the transaction structure controls.
- Define the patents, products, and territories covered.
- Set royalty reporting and audit rights.
- Review restrictive terms for competition risk.
6. How Are Judgments and Settlements Managed Across Borders?
Patent rights are territorial. A judgment from one country should not be treated as a worldwide patent enforcement order.
Plan Enforcement Market by Market
Recognition, remedies, and patent rights vary by forum. The practical question is where the conduct, products, parties, and assets are located.
- Identify target markets and relevant assets.
- Confirm local enforcement procedures.
- Match requested relief to local patent rights.
Make Settlement Compliance Measurable
Royalty disputes often start with a reporting gap rather than a fresh infringement claim. Clear verification terms make noncompliance easier to address.
- Set payment and reporting dates.
- Define audit and record-access rights.
- State notice and cure procedures clearly.
7. Frequently Asked Questions
Does filing an IPR automatically stay a patent lawsuit?
No. Filing an IPR petition does not automatically stay district-court litigation. The district court decides whether a stay is appropriate.
Can a patent owner skip the PTAB preliminary response?
Yes. A patent owner need not file a preliminary response. If none is filed, the Board can decide institution based on the petition and record.
Can one patent judgment be enforced worldwide?
No. Patent rights are territorial, and judgment recognition or enforcement depends on the jurisdiction, local rights, and relief involved.
Is WIPO the forum for challenging patent validity?
Not like PTAB IPR or EPO opposition. Patent validity challenges generally proceed through applicable national or regional procedures.
8. Coordinate the Litigation before the Calendars Collide
A global technology patent dispute attorney can align federal litigation, PTAB strategy, interim relief, settlement, and foreign enforcement. SJKP's attorneys can review filing conflicts and align parallel filings now. Contact SJKP before one forum's deadline limits options in another.
14 Aug, 2026
