Discovery is the phase of litigation where the parties formally exchange information about the case. The suit is on file and the answer is in. Now both sides develop the facts, what documents exist, what witnesses know, what the financials show, what an expert can support. Discovery is the structured process for pulling all of that into the open.
In most Texas business cases it is also the longest and most expensive phase, and frequently the decisive one. The documents produced here often settle the outcome. The witnesses deposed here become the trial witnesses. The expert work built here carries damages and theory through to judgment. The sections below cover how Texas discovery actually runs, from the control levels and the 2021 amendments through depositions, experts, and the disputes that eat into a budget.
The discovery control levels
Texas Rule of Civil Procedure 190 establishes three discovery control levels:
Level 1 applies to cases with limited monetary relief (currently under $250,000). Streamlined framework with:
- 180-day discovery period from the first request.
- Limited interrogatories.
- Limited depositions.
- Limited overall discovery activity.
Level 1 cases proceed faster but with less developed records than higher-level cases.
Level 2 applies to most other cases. Default framework for standard commercial cases:
- 6 to 9 months of discovery depending on trial setting.
- Standard discovery limits.
- Most flexible default framework.
Level 3 applies to complex cases. Court-ordered case- specific schedules:
- Tailored discovery framework.
- Often longer discovery periods.
- Higher limits or unlimited discovery on specific issues.
- Used for multi-party, multi-issue, or otherwise complex cases.
The choice of level affects timing, cost, and case strategy substantially. Most business cases proceed under Level 2; complex commercial cases often warrant Level 3 treatment.
The 2021 amendments
A significant development: the 2021 amendments to Texas Rules of Civil Procedure 192-194 substantially restructured Texas discovery.
The principal changes:
Required initial disclosures. Parties must automatically exchange basic case information without request, including:
- Names of potential witnesses.
- Description of documents and tangible things.
- Damages calculation.
- Insurance agreements.
- Various other case-specific items.
The required disclosures replaced the previous request-driven framework. Initial disclosures must be provided within specific deadlines (often 30 days after the first answer).
Updated scope provisions. The scope of discovery was refined with specific provisions addressing relevance, proportionality, and similar considerations.
Expert disclosure framework. Updated requirements for disclosing expert witnesses and their opinions.
Other procedural updates. Various procedural refinements addressing specific recurring issues.
Most Texas business cases now begin with the initial disclosure exchange before formal discovery requests are served. The change increased early case transparency.
Written discovery
The principal forms of written discovery:
Requests for production. Requests for documents and tangible things. The principal mechanism for obtaining the opposing party’s documents. Modern business cases typically involve substantial electronic document production.
Interrogatories. Written questions answered under oath. Used for obtaining specific information about positions, witnesses, theories, and other case-specific issues. Limited in number (typically 25 per party, including discrete sub-parts).
Requests for admission. Statements that the responding party must admit or deny. Used to narrow disputed issues and establish specific facts.
Subpoenas to third parties. Requests for documents from non-parties. Common in business cases where documents from customers, vendors, and other related parties are relevant.
Each form has specific procedural requirements. Responses are typically due 30 days after service.
Document production
Document production is typically the largest single discovery effort in modern business cases:
Identification of relevant documents. Through litigation hold notices, custodian interviews, and systematic searches.
Collection. Physical and electronic collection from relevant custodians and systems.
Processing. Conversion of native files to reviewable formats, deduplication, and indexing.
Review. Attorney review for responsiveness, privilege, and confidentiality. Often the most labor-intensive phase, particularly in cases with large document volumes.
Production. Producing responsive non-privileged documents to the opposing party in agreed format.
Privilege log. Identifying withheld documents on the basis of attorney-client privilege, work product, or other privileges.
Modern business cases routinely involve hundreds of thousands or millions of documents. Document production costs are significant.
Depositions
Depositions are oral examinations of witnesses under oath:
Party depositions. Depositions of parties and party representatives. Typically include corporate representatives designated to testify on specific topics under Rule 199.
Fact witness depositions. Depositions of individuals with relevant knowledge who are not parties.
Expert depositions. Depositions of expert witnesses after their reports or designations.
30(b)(6) equivalent depositions. Depositions of corporate representatives on specific topics. The deposing party identifies topics; the responding party designates witnesses prepared to testify.
Out-of-state depositions. When witnesses are outside Texas, specific procedures apply (commission, subpoena under the deposing party’s local rules).
Most depositions last 4 to 6 hours but can run longer depending on the witness. The 6-hour Rule 199 limit applies unless extended by agreement or court order.
Expert designation
Expert witnesses in Texas business cases typically include:
Damages experts. Economists, accountants, or industry specialists supporting damages calculations.
Substantive experts. Industry experts addressing specific substantive issues.
Forensic accountants. Particularly important in partner disputes, fraud cases, and other cases involving complex financial analysis.
Real estate appraisers. In cases involving real property valuation.
Other technical experts. Engineers, IT specialists, and other technical experts as case context requires.
Expert designation includes:
- Identification of the expert.
- Disclosure of the expert’s opinions.
- Production of the expert’s report (in many cases).
- Production of materials reviewed by the expert.
- Availability for deposition.
Discovery disputes
Discovery disputes are common and consume substantial case resources:
Scope disputes. Whether specific requests are within proper scope.
Privilege disputes. Whether withheld documents are properly privileged.
Compliance disputes. Whether responses are adequate or whether further production is required.
Protective order issues. Whether confidentiality protections should apply to specific information.
Sanctions motions. When discovery obligations have been violated.
Most discovery disputes resolve through Rule 191 conferences (required to meet and confer before filing motions) but some require court intervention. Discovery motions can substantially extend cases when they become substantial.
Strategic considerations
Effective discovery practice:
Plan from intake. Discovery strategy should be developed from intake based on the case theory and target witnesses/documents.
Coordinate with substantive theory. Discovery requests should be tied to specific elements of claims and defenses.
Manage volume. Large document cases require careful volume management. Document review platforms, custodian prioritization, and targeted requests reduce cost.
Prepare for depositions. Preparation is more than half the work of any deposition. Witness prep on the opposing side; substantive prep on your side.
Address privilege carefully. Privilege issues frequently produce expensive disputes. Careful initial treatment avoids problems later.
Keeping discovery from running the case
We plan discovery from intake, tied to the case theory and the specific witnesses and documents that matter, because generic discovery is where budgets disappear. We manage document volume hard, using modern review tools and custodian prioritization to cut cost without cutting quality. We prepare witnesses thoroughly, both the ones we depose and our own who sit for deposition. And we handle privilege with care up front, since privilege fights are expensive and tend to go badly when treated as an afterthought.
Discovery is the phase most capable of swallowing a case whole. The point of managing it is to surface the evidence that decides the case and stop paying for everything else.
Frequently Asked Questions
What is discovery in a Texas business lawsuit?
Discovery is the formal process during litigation in which the parties exchange information about the case. Texas discovery includes initial disclosures (required automatic exchange of basic case information under the 2021 amendments to Rule 194), written discovery (requests for production, interrogatories, requests for admission), document production, depositions (oral examinations under oath), and expert witness designation. The discovery phase typically runs 6 to 12 months in standard commercial cases and is when most of the evidence is developed.
What are the Texas discovery control levels?
Rule 190 sets up three discovery levels. Level 1 covers cases seeking limited monetary relief, currently under $250,000, and runs a compressed 180-day discovery period from the first request, with caps on interrogatories, depositions, and the rest. Level 2 governs most other cases and gives 6 to 9 months of discovery, keyed to the trial date. Level 3 is for complex matters and runs on a court-ordered schedule built for the case. The level a case falls into fixes how much discovery is allowed and when.
How do the 2021 Texas discovery rule amendments affect business litigation?
The 2021 changes to Rules 192 through 194 reworked Texas discovery in a real way. Mandatory initial disclosures took the place of the old request-driven system, so parties now trade basic case information, witnesses, documents, a damages calculation, and insurance, automatically and without being asked. The amendments also refreshed the scope rules, expert-disclosure requirements, and other mechanics. In practice a Texas business case now opens with that disclosure exchange before any formal requests go out, which puts more on the table early.