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IN THE UNITED STATES DISTRICT COURT

FOR THE EASTERN DISTRICT OF TEXAS

MARSHALL DIVISION

HEADWATER RESEARCH LLC,

 Plaintiff,

v.

T-MOBILE US, INC. et al.,

 Defendants.

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CIVIL ACTION NO. 2:23-cv-00379-JRG-RSP

DISCOVERY ORDER

After a review of the pleaded claims and defenses in this action, in furtherance of the 

management of the Court’s docket under Federal Rule of Civil Procedure 16, and after receiving 

the input of the parties to this action, it is ORDERED AS FOLLOWS:

1. Initial Disclosures. In lieu of the disclosures required by Federal Rule of Civil Procedure 

26(a)(1), each party shall disclose to every other party the following information:

(a) the correct names of the parties to the lawsuit;

(b) the name, address, and telephone number of any potential parties;

(c) the legal theories and, in general, the factual bases of the disclosing party’s claims 

or defenses (the disclosing party need not marshal all evidence that may be offered 

at trial);

(d) the name, address, and telephone number of persons having knowledge of relevant 

facts, a brief statement of each identified person’s connection with the case, and a 

brief, fair summary of the substance of the information known by any such person;

(e) any indemnity and insuring agreements under which any person or entity carrying 

on an insurance business may be liable to satisfy part or all of a judgment entered 

in this action or to indemnify or reimburse for payments made to satisfy the 

judgment;

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(f) any settlement agreements relevant to the subject matter of this action; and

(g) any statement of any party to the litigation.

2. Disclosure of Expert Testimony.1 A party must disclose to the other parties the identity 

of any witness it may use at trial to present evidence under Federal Rule of Evidence 702, 

703 or 705, and:

(a) if the witness is one retained or specially employed to provide expert testimony in 

the case or one whose duties asthe party’s employee regularly involve giving expert 

testimony, provide the disclosures required by Federal Rule of Civil Procedure 

26(a)(2)(B) and Local Rule CV-26; and

(b) for all othersuch witnesses, provide the disclosure required by Federal Rule of Civil 

Procedure 26(a)(2)(C).

3. Additional Disclosures. Without awaiting a discovery request,

2 each party will make the 

following disclosures to every other party:

(a) provide the disclosures required by the Patent Rules for the Eastern District of 

Texas with the following modifications to P.R. 3-1 and P.R. 3-3:

i. If a party claiming patent infringement asserts that a claim element is a 

software limitation, the party need not comply with P.R. 3-1 for those claim 

elements until 30 days after source code for each Accused Instrumentality 

is produced by the opposing party. Thereafter, the party claiming patent 

infringement shall identify, on an element-by-element basis for each 

asserted claim, what source code of each Accused Instrumentality allegedly 

satisfies the software limitations of the asserted claim elements.

1 All expert reports should be written such that the report is organized with discrete paragraph numbers.

2 The Court anticipates that this disclosure requirement will obviate the need for requests for production.

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ii. If a party claiming patent infringement exercises the provisions of 

Paragraph 3(a)(i) of this Discovery Order, the party opposing a claim of 

patent infringement may serve, not later than 30 days after receipt of a 

Paragraph 3(a)(i) disclosure, supplemental “Invalidity Contentions” that 

amend only those claim elements identified as software limitations by the 

party claiming patent infringement.

(b) produce or permit the inspection of all documents, electronically stored 

information, and tangible things in the possession, custody, or control of the party 

that are relevant to the pleaded claims or defenses involved in this action, except to

the extent these disclosures are affected by the time limits set forth in the Patent 

Rules for the Eastern District of Texas; and

(c) provide a complete computation of any category of damages claimed by any party 

to the action, and produce or permit the inspection of documents or other 

evidentiary material on which such computation is based, including materials 

bearing on the nature and extent of injuries suffered, except that the disclosure of 

the computation of damages may be deferred until the time for Expert Disclosures 

if a party will rely on a damages expert.

4. Protective Orders. The Court will enter the parties’ Agreed Protective Order.

5. Discovery Limitations. The discovery in this case is limited to the disclosures described 

in Paragraphs 1-3 together with:

(a) Interrogatories: Plaintiff may serve 40 interrogatories on the Defendants

collectively, and the Defendants may serve 40 interrogatories on Plaintiff. For 

example, Plaintiff may serve the same 40 interrogatories on each of the Defendants.

(b) Requests for Admission: Plaintiff may serve 40 requests for admission on the

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Defendants collectively, and the Defendants may serve 40 requests for admission 

on Plaintiff. Notwithstanding the limitations of this subsection, any party may serve 

an unlimited number of requests for admission that seek an admission as to the 

authenticity of a particular document or thing, provided that requests for admission 

directed to document authentication are clearly denoted as such and served 

separately from any requests for admission subject to the numerical limitations 

previously stated. The parties shall work together in good faith to agree on a

stipulation as to the authenticity of their own documents to avoid the service of 

large numbers of requests for admission relating to authenticity.

(c) Testifying Expert Witnesses: Each side is entitled to up to five (5) testifying

expert witnesses.

(d) Fact Depositions (non-expert):

i) Each side3 shall be permitted up to 60 hours of deposition time for depositions 

of party witnesses under Rule 30(b)(1) or Rule 30(b)(6) and up to 60 hours of 

deposition time for depositions of non-parties under Rule 30(b)(1), Rule 

30(b)(6), or Rule 45. To be clear, a person deposed in his or her individual 

capacity under Rule 30(b)(1) may be further deposed under Rule 30(b)(6) if so 

designated, but the total deposition time for the witness shall not exceed 7 hours 

absent a showing of good cause.

ii) No witness shall be subjected to more than 7 hours of deposition time on the 

record on a single day, including if that witness is to testify on multiple days, 

without the consent of the witness and all parties. In general, no one person 

3 “Side” means a party or a group of parties with a common interest. For purposes of this section, Defendants 

collectively constitute a single side.

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shall be deposed for any longer than 7 hours total. But if the same witness is 

identified as a 30(b)(6) witness for most topics, the Court may, upon motion, 

consider allowing additional deposition time.

(e) Expert Depositions: Each expert can be deposed for up to 7 hours (on the record)

for each substantive issue (e.g., infringement, validity, or damages) on which the 

expert has offered an opinion and report. For example, an expert providing reports

regarding infringement and validity may be deposed for 14 hours. Experts, 

however, shall not be deposed for more than 7 hours in one day as set forth in Rule 

30(d)(1) unless otherwise agreed to by the parties. The foregoing provisions 

regarding expert discovery do not apply to claim construction discovery.

(f) Third Party Discovery: The parties may serve as many third-party document and

deposition subpoenas as reasonably needed. The parties may also serve depositions 

upon written questions on third parties pursuant to Fed. R. Civ. P. 31, as well as 

depositions on written questions of custodians of business records for third parties. 

With respect to third-party discovery, the parties agree to produce documents 

within three (3) business days of receipt of the documents from the third party.

(g) Translated Depositions: For any deposition that requires a translation between

English and any foreign language, that witness may be deposed for an additional 

amount of time up to three-quarters of the standard deposition time. For purposes 

of clarity, if an entire deposition is translated, the taking party is entitled to 12.25 

hours of deposition time, of which 7 hours shall count towards the deposition limits 

established in this Order. In no event, however, shall a witness be required to testify 

for more than seven 7 hours of actual deposition time in one day unless otherwise 

stipulated or ordered.

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(h) Representative Products: The parties shall discuss in good faith the feasibility of a 

stipulation as to representative productsin order to streamline the case for discovery 

and trial. No party shall argue that this provision constitutes an agreement or finding 

that a stipulation regarding representative products is necessarily appropriate or 

feasible in this particular case.

These provisions may be amended by agreement of the parties. Any party may later move to modify these 

limitations for good cause.

6. Privileged Information. There is no duty to disclose privileged documents or 

information. However, the parties are directed to meet and confer concerning privileged 

documents or information after the Status Conference. By the deadline set in the Docket 

Control Order, the parties shall exchange privilege logs identifying the documents or 

information and the basis for any disputed claim of privilege in a manner that, without 

revealing information itself privileged or protected, will enable the other parties to assess 

the applicability of the privilege or protection. Any party may move the Court for an order 

compelling the production of any documents or information identified on any other party’s 

privilege log. If such a motion is made, the party asserting privilege shall respond to the 

motion within the time period provided by Local Rule CV-7. The party asserting privilege 

shall then file with the Court within 30 days of the filing of the motion to compel any proof 

in the form of declarations or affidavits to support their assertions of privilege, along with 

the documents over which privilege is asserted for in camera inspection. However, if the 

party asserting privilege seeks an in camera review by the Court, such party shall first 

obtain leave from the Court prior to delivery of documents to the Court.

7. Signature. The disclosures required by this Order shall be made in writing and signed by 

the party or counsel and shall constitute a certification that, to the best of the signer’s 

knowledge, information and belief, such disclosure is complete and correct as of the time 

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it is made. If feasible, counsel shall meet to exchange disclosures required by this Order; 

otherwise, such disclosures shall be served as provided by Federal Rule of Civil Procedure

5. The parties shall promptly file a notice with the Court that the disclosures required under this 

Order have taken place.

8. Duty to Supplement. After disclosure is made pursuant to this Order, each party is under 

a duty to supplement or correct its disclosures immediately if the party obtains information 

on the basis of which it knows that the information disclosed was either incomplete or 

incorrect when made, or is no longer complete or true.

9. Discovery Disputes.

(a) Except in cases involving claims of privilege, any party entitled to receive 

disclosures (“Requesting Party”) may, after the deadline for making disclosures, 

serve upon a party required to make disclosures (“Responding Party”) a written 

statement, in letter form or otherwise, of any reason why the Requesting Party 

believes that the Responding Party’s disclosures are insufficient. The written 

statement shall list, by category, the items the Requesting Party contends should be 

produced. The parties shall promptly meet and confer. If the parties are unable to 

resolve their dispute, then the Responding Party shall, within 14 days after service 

of the written statement upon it, serve upon the Requesting Party a written 

statement, in letter form or otherwise, which identifies (1) the requested items that 

will be disclosed, if any, and (2) the reasons why any requested items will not be 

disclosed. The Requesting Party may thereafter file a motion to compel.

(b) An opposed discovery related motion, or any response thereto, shall not exceed 7 

pages. Attachments to a discovery related motion, or a response thereto, shall not 

exceed 5 pages. No further briefing is allowed absent a request or order from the 

Court.

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(c) Prior to filing any discovery related motion, the parties must fully comply with the 

substantive and procedural conference requirements of Local Rule CV-7(h) and (i). 

Within 72 hours of the Court setting any discovery motion for a hearing, each 

party’s lead attorney (see Local Rule CV-11(a)) and local counsel shall meet and 

confer in person or by telephone, without the involvement or participation of other 

attorneys, in an effort to resolve the dispute without Court intervention.

(d) Counsel shall promptly notify the Court of the results of that meeting by filing a 

joint report of no more than two pages. Unless excused by the Court, each party’s 

lead attorney shall attend any discovery motion hearing set by the Court (though 

the lead attorney is not required to argue the motion).

(e) Any change to a party’s lead attorney designation must be accomplished by motion 

and order.

(f) Counsel are directed to contact the chambers of the undersigned for any “hot-line” 

disputes before contacting the Discovery Hotline provided by Local Rule CV26(e). If the undersigned is not available, the parties shall proceed in accordance 

with Local Rule CV-26(e).

10. No Excuses. A party is not excused from the requirements of this Discovery Order because 

it has not fully completed its investigation of the case, or because it challenges the 

sufficiency of another party’s disclosures, or because another party has not made its 

disclosures. Absent court order to the contrary, a party is not excused from disclosure 

because there are pending motions to dismiss, to remand or to change venue.

11. Filings. Only upon request from chambers shall counsel submit to the court courtesy 

copies of any filings.

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12. Proposed Stipulations by the Parties Regarding Discovery.

(a) Privilege Logs: Notwithstanding the provisions of Paragraph 6, the parties agree

that work product created or communications exchanged after the filing of this 

lawsuit on July 28, 2023, need not be included on a privilege log.

(b) E-Discovery Order: Paragraph 3 of this Discovery Order does not apply to email

discovery, which will be subject to the forthcoming Order Regarding E-Discovery. 

The parties shall meet and confer regarding the Model Order Regarding EDiscovery in Patent Cases, including any modifications thereto. A proposed order 

shall be submitted within four weeks after entry of this order.

(c) Expert Discovery: The parties agree that an expert’s drafts reports, notes, and

outlines of draft reports shall not be subject to discovery in this case, nor shall any 

such drafts, notes, or outlines of draft reports that the expert prepared in other cases 

that are not publicly available be subject to discovery in this case. Discovery of 

materials provided to experts shall be limited to those materials, facts, expert 

opinions, and other matters relied upon by the experts in forming their final report, 

trial or deposition testimony, or any opinion in this case. No conversations or 

communications between counsel and any expert will be subject to discovery unless 

the conversations or communications are relied upon by such expertsin formulating 

opinions that are presented in reports, trial, or deposition testimony in this case. 

Materials, communications (including email), and other information exempt from 

discovery under this paragraph shall be treated as attorney-work product for the 

purposes of this litigation. This provision does not change the existing protections 

for expert discovery and exceptions thereto set forth in Fed. R. Civ. P. 26(b)(4).

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(d) Third Party Discovery: A party who serves a subpoena in this case on a third party

shall immediately provide a copy to the other parties. A party who commands a 

deposition through a subpoena will invite and allow the other parties to attend such 

deposition. A party who receives documents from a third party pursuant to a 

subpoena will reproduce those documents to the other parties within three (3) 

business days. This section does not change the existing obligations and 

requirements set forth in Fed. R. Civ. P. 45, or other Federal Rules of Civil 

Procedure.

(e) Electronic Service: Except when unpracticable, the parties shall serve all

documents electronically, either by email, FTP, or ECF, to the email addresses 

designated for service by each party. Each party shall ensure that any email they 

designate for service encompasses only counsel of record for a party and persons 

employed by counsel of record or their respective law firms.

(f) Inadvertent Production: Pursuant to Fed. R. Civ. P. 502(d), inadvertent

production of Materials covered by the attorney-client privilege or work product 

protection is not a waiver in this or any other federal or state proceeding. In case of 

inadvertent production, at the producing party’s request, the receiving party shall 

immediately return or destroy the inadvertently produced materials. The producing 

party will provide a privilege log in accordance with Paragraph 6.

13. Standing Orders. The parties and counsel are charged with notice of and are required to 

fully comply with each of the Standing Orders of this Court. Such are posted on the Court’s 

website at http://www.txed.uscourts.gov/?q=court-annexed-mediation-plan. The substance 

of some such orders may be included expressly within this Discovery Order, while others

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(including the Court’s Standing Order Regarding Protection of Proprietary and/or 

Confidential Information to Be Presented to the Court During Motion and Trial Practice) 

are incorporated herein by reference. All such standing orders shall be binding on the 

parties and counsel, regardless of whether they are expressly included herein or made a 

part hereof by reference.

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