1. What Should the Company Test before Filing or Defending?
Start with the patent, the accused product or process, and the evidence already available. Confirm the patent type before choosing an infringement framework.
Use the Right Infringement Framework
Utility and design patents require different analysis. Utility cases turn on claim limitations, while design cases focus on overall visual appearance.
| Patent Type | Initial Question |
|---|---|
| Utility patent | Does the accused product or process meet each limitation of the asserted claim? |
| Design patent | Would an ordinary observer, considering relevant prior art, view the overall designs as substantially the same? |
Utility patent
- Initial QuestionDoes the accused product or process meet each limitation of the asserted claim?
Design patent
- Initial QuestionWould an ordinary observer, considering relevant prior art, view the overall designs as substantially the same?
Literal utility-patent infringement requires each claim limitation to be present. The doctrine of equivalents may apply when literal infringement is absent.
For design-specific issues, see Design Patent.
Test the Theory against the Record
Product resemblance alone is not enough. Connect the asserted patent to technical evidence before deciding whether to file, defend, or negotiate.
- Map the accused product or process to the asserted patent.
- Review the specification, prosecution history, and relevant prior art.
- Identify non-infringement and invalidity positions that may change the business decision.
- For a prospective plaintiff, complete the reasonable prefiling inquiry required by Rule 11.
See Patent Infringement Litigation for the broader litigation framework.
2. Can the Patent Case Be Filed in This Federal Court?
A federal patent infringement claim is governed by federal law, but a plaintiff cannot choose any federal district. The patent venue statute separately limits where the case may proceed.
Separate Subject-Matter Jurisdiction from Venue
Under 28 U.S.C. § 1338(a), federal district courts have jurisdiction over civil actions arising under the patent laws, and state courts cannot hear those patent claims. Venue follows 28 U.S.C. § 1400(b).
- Domestic corporate residence: A corporation generally resides in its state of incorporation for patent venue.
- Alternative venue: Venue may exist where infringement occurred and the defendant has a regular and established place of business.
- Forum planning: A local office, sales activity, or business contact does not automatically satisfy the statutory test.
Check Venue before Building the Litigation Plan
Venue can affect local rules, discovery logistics, and schedule. Verify the facts before treating a preferred forum as available.
- Confirm the defendant's state of incorporation.
- Identify alleged acts of infringement tied to the proposed district.
- Assess the defendant's regular and established place of business there.
- Plan for a venue challenge or transfer motion if supported.
3. What Will the Company Have to Disclose during the Case?
Patent litigation can expose technical and financial information before trial. Scheduling and discovery rules shape timing, production, and confidentiality.
Let the Scheduling Order Set the Calendar
Rule 16(b) generally requires the scheduling order within the earlier of 90 days after any defendant is served or 60 days after any defendant appears, unless the judge finds good cause for delay.
- Prepare for the Rule 26(f) discovery-planning conference.
- Identify proposed deadlines for discovery, experts, and motions.
- Check any applicable local rules and judge-specific claim-construction procedures.
- Treat claim construction as a major milestone, not a universal first-90-day event.
Plan for Confidential Technical Discovery
Discovery can reach source code, engineering files, testing data, licenses, and financial information. Rule 26(c) allows a court, for good cause, to limit how trade secrets and confidential commercial material are disclosed.
- Identify sensitive information before production.
- Negotiate access tiers that fit the information and the dispute.
- Address expert access rather than assuming every expert sees every document.
- Separate confidentiality protection from attorney-client privilege and work-product claims.
For broader IP disputes, see Intellectual Property Litigation.
4. When Does Continuing the Case Still Make Business Sense?
Patent litigation has no reliable nationwide price tag. Ask what the next phase will cost and whether continuing still makes business sense.
Budget the Workstreams That Create Cost
Early technical review differs from full discovery, expert work, and trial preparation. Budget by the work the case actually reaches.
- Pre-suit claim, technical, and prior-art analysis.
- Pleadings, venue motions, and early case management.
- Electronic discovery, depositions, and expert analysis.
- Claim construction, dispositive motions, trial, and possible appeal.
Revisit Settlement at Meaningful Milestones
Settlement has no single correct moment. Ask whether continuing justifies the next phase of legal spend and business disruption.
- Compare licensing proposals with the infringement and validity positions.
- Reassess after important discovery or claim-construction developments.
- Compare lump-sum, royalty, and other commercial terms on the same assumptions.
- Account for trial and appellate risk before rejecting a later-stage resolution.
If the case proceeds beyond final judgment, see Federal Appeals.
5. Frequently Asked Questions
Do I have to send a demand letter before filing a patent infringement lawsuit?
Not in every case. For patented articles subject to 35 U.S.C. § 287(a), marking and actual notice can affect when damages begin. Review notice strategy before sending one.
Can a patent case be transferred after it is filed?
Yes. A defendant may challenge patent venue or seek transfer on other available grounds. Test venue before filing rather than after a forum dispute begins.
Will a protective order keep every trade secret from the other side?
No. A protective order can restrict access and use, but relevant confidential information may still be discoverable under conditions set by agreement or court order.
Does a design patent case use the doctrine of equivalents?
Design-patent infringement uses the ordinary-observer framework rather than automatically applying utility-patent claim doctrines. The patented design and overall visual comparison drive the analysis.
6. Ask SJKP to Assess the Litigation Decision before Costs Escalate
SJKP's attorneys can review the patent, accused product, venue facts, technical record, discovery exposure, and litigation objectives. The team can help frame the infringement or defense position and identify the decisions ahead.
14 Aug, 2026
