D.C. Super. Ct. Dom. Rel. R. 26

(a) DISCLOSURES.

(1) Pretrial Disclosures.

(A) In General. At the initial hearing, the judge or magistrate judge may order the

parties to exchange information and documents, and, if so, set the dates and sequence.

If so ordered, a party must provide to the other parties the following information about

the evidence that it may present at trial other than solely for impeachment:

(i) the name, the address, and telephone number of each witness--separately

identifying those the party expects to present and those it may call if the need arises;

(ii) a copy of each exhibit, with a list of all exhibits which separately identifies those

the party expects to offer and those it may offer if the need arises;

(iii) financial information in accordance with a form(s) provided by the court.

(B) Protective Order. An order for pretrial disclosures does not preclude a

subsequent motion for a protective order, where appropriate.

(2) Disclosure of Expert Testimony.

(A) In General. A party must disclose to the other parties the identity of any witness

it may use at trial to present expert testimony.

(B) Witnesses Who Must Provide a Written Report. Unless otherwise stipulated or

ordered by the court, this disclosure must be accompanied by a written report if the

witness is one retained or specially employed to provide expert testimony in the case or

one whose duties as the party's employee regularly involve giving expert testimony. The

report must contain:

(i) a complete statement of all opinions the witness will express and the basis and

reasons for them;

(ii) the facts or data considered by the witness in forming them;

(iii) any exhibits that will be used to summarize or support them;

(iv) the witness's qualifications, including a list of all publications authored in the

previous 10 years;

(v) a list of all other cases in which, during the previous 4 years, the witness

testified as an expert at trial or by deposition;

(vi) a statement of the compensation to be paid for the study and testimony in the

case; and

(vii) the following certification, signed by the witness: “I hereby certify that this

report is a complete and accurate statement of all of my opinions, and the basis and

reasons for them, to which I will testify under oath.”

(C) Witnesses Who Do Not Provide a Written Report. Unless otherwise stipulated or

ordered by the court, if the witness is not required to provide a written report, this

disclosure must state:

(i) the subject matter on which the witness is expected to present evidence; and

(ii) a summary of the facts and opinions to which the witness is expected to testify.

(D) Time to Disclose Expert Testimony. A party must make these disclosures at the

times and in the sequence ordered by the court.

(E) Supplementing the Disclosure. The parties must supplement these disclosures

when required under Rule 26(e).

(3) [Omitted].

(4) Form of Disclosures. Unless the court orders otherwise, all disclosures under Rule

26(a) must be in writing, signed, and served.

(b) DISCOVERY SCOPE AND LIMITS.

(1) Scope in General. Unless otherwise limited by court order, the scope of discovery

is as follows: Parties may obtain discovery regarding any nonprivileged matter that is

relevant to any party’s claim or defense and proportional to the needs of the case,

considering the importance of the issues at stake in the action, the amount in

controversy, the parties’ relative access to relevant information, the parties’ resources,

the importance of the discovery in resolving the issues, and whether the burden or

expense of the proposed discovery outweighs its likely benefit. Information within this

scope of discovery need not be admissible in evidence to be discoverable.

(2) Limitations on Frequency and Extent.

(A) When Permitted. By order, the court may alter the limits in these rules on the

number of depositions and interrogatories or length of depositions under Rule 30. By

order, the court may also limit the number of requests under Rule 36.

(B) Specific Limitations on Electronically Stored Information. A party need not

provide discovery of electronically stored information from sources that the party

identifies as not reasonably accessible because of undue burden or cost. On motion to

compel discovery or for a protective order, the party from whom discovery is sought

must show that the information is not reasonably accessible because of undue burden

or cost. If that showing is made, the court may nonetheless order discovery from such

sources if the requesting party shows good cause, considering the limitations of Rule

26(b)(2)(C). The court may specify conditions for the discovery.

(C) When Required. On motion or on its own, the court must limit the frequency or

extent of discovery otherwise allowed by these rules if it determines that:

(i) the discovery sought is unreasonably cumulative or duplicative, or can be

obtained from some other source that is more convenient, less burdensome, or less

expensive;

(ii) the party seeking discovery has had ample opportunity to obtain the

information by discovery in the action; or

(iii) the proposed discovery is outside the scope permitted by Rule 26(b)(1).

(3) Trial Preparation: Materials.

(A) Documents and Tangible Things. Ordinarily, a party may not discover

documents and tangible things that are prepared in anticipation of litigation or for trial by

or for another party or its representative (including the other party’s attorney, consultant,

or agent). But, subject to Rule 26(b)(4), those materials may be discovered if:

(i) they are otherwise discoverable under Rule 26(b)(1); and

(ii) the party shows that it has substantial need for the materials to prepare its

case and cannot, without undue hardship, obtain their substantial equivalent by other

means.

(B) Protection Against Disclosure. If the court orders discovery of those materials,

it must protect against disclosure of the mental impressions, conclusions, opinions, or

legal theories of a party’s attorney or other representative concerning the litigation.

(C) Previous Statements. Any party or other person may, on request and without the

required showing, obtain the person’s own previous statement about the action or its

subject matter. If the request is refused, the person may move for a court order, and

Rule 37(a)(5) applies to the award of expenses. A previous statement is either

(i) a written statement that the person has signed or otherwise adopted or

approved; or

(ii) a contemporaneous stenographic, mechanical, electrical, or other recording--or

a transcription of it—that recites substantially verbatim the person’s oral statement.

(4) Trial Preparation: Experts.

(A) Deposition of an Expert Who May Testify. A party may depose any person who

has been identified as an expert whose opinions may be presented at trial. If Rule

26(a)(2) requires a report from the expert, the deposition may be conducted only after

the report is provided.

(B) Trial-Preparation Protection for Draft Reports or Disclosures. Rules 26(b)(3)(A)

and (B) protect drafts of any report or disclosure required under Rule 26(a)(2),

regardless of the form in which the draft is recorded.

(C) Trial-Preparation Protection for Communications Between a Party's Attorney and

Expert Witnesses. Rules 26(b)(3)(A) and (B) protect communications between the

party's attorney and any witness required to provide a report under Rule 26(a)(2)(B),

regardless of the form of the communications, except to the extent that the

communications:

(i) relate to compensation for the expert's study or testimony;

(ii) identify facts or data that the party's attorney provided and that the expert

considered in forming the opinions to be expressed; or

(iii) identify assumptions that the party's attorney provided and that the expert

relied on in forming the opinions to be expressed.

(D) Expert Employed Only for Trial Preparation. Ordinarily, a party may not, by

interrogatories or deposition, discover facts known or opinions held by an expert who

has been retained or specially employed by another party in anticipation of litigation or

to prepare for trial and who is not expected to be called as a witness at trial. But a party

may do so only:

(i) as provided in Rule 35(b); or

(ii) on showing exceptional circumstances under which it is impracticable for the

party to obtain facts or opinions on the same subject by other means.

(E) Payment. Unless manifest injustice would result, the court must require that the

party seeking discovery:

(i) pay the expert a reasonable fee for time spent in responding to discovery under

Rule 26(b)(4)(A) or (D); and

(ii) for discovery under Rule 26(b)(4)(D), also pay the other party a fair portion of

the fees and expenses it reasonably incurred in obtaining the expert’s facts and

opinions.

(5) Claiming Privilege or Protecting Trial Preparation Materials.

(A) Information Withheld. When a party withholds information otherwise

discoverable by claiming that the information is privileged or subject to protection as

trial-preparation material, the party must:

(i) expressly make the claim; and

(ii) describe the nature of the documents, communications, or tangible things not

produced or disclosed − and do so in a manner that, without revealing information itself

privileged or protected, will enable other parties to assess the claim.

(B) Information Produced. If information produced in discovery is subject to a claim

of privilege or of protection as trial-preparation material, the party making the claim may

notify any party that received the information of the claim and the basis for it. After being

notified, a party must promptly return, sequester, or destroy the specified information

and any copies it has; must not use or disclose the information until the claim is

resolved; must take reasonable steps to retrieve the information if the party disclosed it

before being notified; and may promptly present the information to the court under seal

for a determination of the claim. The producing party must preserve the information until

the claim is resolved.

(c) PROTECTIVE ORDERS.

(1) In General. A party or any person from whom discovery is sought may move for a

protective order in this court—or as an alternative on matters relating to a deposition, in

the court for the jurisdiction where the deposition will be taken. The motion must

include a certification that the movant has in good faith conferred or attempted to confer

with other affected parties in an effort to resolve the dispute without court action. The

court may, for good cause, issue an order to protect a party or person from annoyance,

embarrassment, oppression, or undue burden or expense, including one or more of the

following:

(A) forbidding the disclosure or discovery;

(B) specifying terms, including time and place or the allocation of expenses, for the

disclosure or discovery;

(C) prescribing a discovery method other than the one selected by the party seeking

discovery;

(D) forbidding inquiry into certain matters, or limiting the scope of disclosure or

discovery to certain matters;

(E) designating the persons who may be present while the discovery is conducted;

(F) requiring that a deposition be sealed and opened only on court order;

(G) requiring that a trade secret or other confidential research, development, or

commercial information not be revealed or be revealed only in a specified way; and

(H) requiring that the parties simultaneously file specified documents or information

in sealed envelopes, to be opened as the court directs.

(2) Stay. When a motion for a protective order is filed, further action with respect to

the matter in dispute is stayed until the court decides the motion.

(3) Awarding Expenses. Rule 37(a)(5) applies to the award of expenses.

(d) TIMING AND SEQUENCE OF DISCOVERY.

(1) Timing. Time limitations for completion of discovery will be set by court order. For

good cause, the court may order an enlargement of time limitations for the completion of

discovery.

(2) Sequence. Unless, on motion, the court orders otherwise for the parties’ and

witnesses’ convenience and in the interests of justice:

(A) methods of discovery may be used in any sequence; and

(B) discovery by one party does not require any other party to delay its discovery.

(e) SUPPLEMENTING DISCLOSURES AND RESPONSES.

(1) In General. A party who has made an expert disclosure under Rule 26(a)—or who

has responded to an interrogatory, request for production, or request for admission—

must supplement or correct its disclosure or response:

(A) in a timely manner if the party learns in some material respect the disclosure or

response is incomplete or incorrect, and if the additional or corrective information has

not otherwise been made known to the other parties during the discovery process or in

writing; or

(B) as ordered by the court.

(2) Expert Witness. For an expert whose report must be disclosed under Rule

26(a)(2), the party’s duty to supplement extends both to information included in the

report and to information given during the expert’s deposition.