S.D. Tex. P. R. 3-4 — Production Accompanying Preliminary Invalidity Contentions

High confidence· verified September 26, 2026Local Rules

Summary

S.D. Tex. P. R. 3-4 — Production Accompanying Preliminary Invalidity Contentions: the court's own rule, verbatim from RULES OF PRACTICE FOR PATENT CASES IN THE SOUTHERN DISTRICT OF TEXAS ((Amended April 18, 2022)), official PDF, sha-custodied. Court-level requirement: applies in every case before the U.S. District Court for the Southern District of Texas alongside the federal rules and any judge-specific procedures.

Requirement

With the “Preliminary Invalidity Contentions,” the party opposing a claim of patent infringement must produce or make available for inspection and copying: (a) documents and information sufficient to show the operation of any aspects or elements of an Accused Instrumentality identified by the patent claimant in its P.R. 3-1(c) chart (e.g., source code, specifications, schematics, flow charts, artwork, or formulas); (b) a copy of each item of prior art identified under P.R. 3-3(a) that does not appear in the file history of the patent(s) at issue, and to the extent any such item is not in English, an English translation of the portion(s) relied upon; and (c) documents and information, including summaries when reasonably available, sufficient to show the amount sold, revenues, costs, and profits of each Accused Instrumentality identified under P.R. 3-1(b) since the issuance of the patents-in-suit.

Source of truth

With the “Preliminary Invalidity Contentions,” the party opposing a claim of patent infringement must produce or make available for inspection and copying: (a) documents and information sufficient to show the operation of any aspects or elements of an Accused Instrumentality iden

Official source: S.D. Tex. — Local & Federal Rules (U.S. District Court, Southern District of Texas)
Source health: Healthy · checked October 4, 2026
Effective date: —
Last verified: September 26, 2026benchpath-appfed-rules-2026-09-25

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