WY · rules
W.R.C.P.Ch.C. 26
Duty to Disclose; General Provisions Governing Discovery
(a) Required Disclosures.
(1) Initial Disclosure.
(A) In General. Except as exempted by Rule 26(a)(1)(B) or as otherwise
stipulated or ordered by the chancery court, a party must, without
awaiting a discovery request, provide to the other parties, but not file with
the chancery court, unless otherwise ordered by the chancery court or
required by other rule:
(i) the name and, if known, the address and telephone number of each
individual likely to have discoverable information--along with the sub-
jects of that information--that the disclosing party may use to support
its claims or defenses, unless the use would be solely for impeachment;
(ii) a copy--or a description by category and location--of all documents,
electronically stored information, and tangible things that the disclosing
party has in its possession, custody, or control and may use to support its
claims or defenses, unless the use would be solely for impeachment;
(iii) a computation of each category of damages claimed by the
disclosing party-- who must also make available for inspection and
copying as under Rule 34 the documents or other evidentiary material,
unless privileged or protected from disclosure, on which each computation is based, including materials bearing on the nature and extent of
injuries suffered; and
(iv) for inspection and copying as under Rule 34, any insurance
agreement under which an insurance business may be liable to satisfy
all or part of a possible judgment in the action or to indemnify or
reimburse for payments made to satisfy the judgment.
(B) Proceedings Exempt from Initial Disclosure. The following proceedings are exempt from initial disclosure:
(i) a forfeiture action in rem arising from a Wyoming statute;
(ii) an action brought without an attorney by a person in the custody
of the State, county, or other political subdivision of the State;
(iii) a proceeding ancillary to a proceeding in another court; and
(iv) an action to enforce an arbitration award.
(1.1) Initial disclosures in divorce actions. Not Applicable.
(1.2) Initial disclosures in custody and support actions where the parties
are not married. Not Applicable.
(1.3) Timing of disclosures; requirement to disclose. Unless a different
time is set by stipulation in writing or by chancery court order, these
disclosures pursuant to 26(a)(1) shall be made within 30 days after a party’s
answer is required to be served under Rule 12(a) or as that period may be
altered as described in Rule 12(a) by the party’s service of a dispositive
motion as described in Rule 12(b). Any party later served or otherwise joined
must make these disclosures within 30 days after being served or joined
unless a different time is set by stipulation in writing or by chancery court
order. A party must make its initial disclosures based on the information
then reasonably available to it. A party is not excused from making its
disclosures because it has not fully investigated the case or because it
challenges the sufficiency of another party’s disclosures or because another
party has not made its disclosures.
(2) Disclosure of Expert Testimony.
(A) In addition to the disclosures required by paragraph (1), a party
must disclose to the other parties the identity of any witness it may use at
trial to present evidence under Wyoming Rule of Evidence 702, 703, or 705.
(B) Witnesses Who Must Provide a Written Report. Unless otherwise
stipulated or ordered by the chancery court, 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,
this disclosure must be accompanied by a written report prepared and
signed by the witness or a disclosure signed by counsel for the party. 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 four years,
the witness testified as an expert at trial or by deposition; and
(vi) a statement of the compensation to be paid for the study and
testimony in the case.
(C) Witnesses Who Do Not Provide a Written Report. Unless otherwise
stipulated or ordered by the chancery 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 under Wyoming Rule of Evidence 702, 703, or 705; 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 that the chancery court
orders. Absent a stipulation or a chancery court order, the disclosures
must be made:
(i) at least 90 days before the date set for trial or for the case to be
ready for trial; or
(ii) if the evidence is intended solely to contradict or rebut evidence on
the same subject matter identified by another party under Rule
26(a)(2)(B) or (C), within 30 days after the other party’s disclosure.
(E) Supplementing the Disclosure. The parties must supplement these
disclosures when required under Rule 26(e).
(3) Pretrial Disclosures.
(A) In General. In addition to the disclosures required by Rule 26(a)(1)
and (2), a party must provide to the other parties and promptly file the
following information about the evidence that it may present at trial other
than solely for impeachment:
(i) the name and, if not previously provided, 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) the designation of those witnesses whose testimony the party
expects to present by deposition and, if not taken stenographically, a
transcript of the pertinent parts of the deposition; and
(iii) an identification of each document or other exhibit, including
summaries of other evidence--separately identifying those items the
party expects to offer and those it may offer if the need arises.
(B) Time for Pretrial Disclosures; Objections. Unless the chancery court
orders otherwise, these disclosures must be made at least 30 days before
trial. Within 14 days after they are made, unless the chancery court sets
a different time, a party may serve and promptly file a list of the following
objections: any objections to the use under Rule 32(a) of a deposition
designated by another party under Rule 26(a)(3)(A)(ii); and any objection,
together with the grounds for it, that may be made to the admissibility of
materials identified under Rule 26(a)(3)(A)(iii). An objection not so made--
except for one under Wyoming Rule of Evidence 402 or 403--is waived
unless excused by the chancery court for good cause.
(4) Form of Disclosures. Unless the chancery court orders otherwise, all
disclosures under Rule 26(a)(1), (2), or (3) must be in writing, signed, and
served.
(b) Discovery Scope and Limits.
(1) Scope in General. Unless otherwise limited by chancery 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 on the length of
depositions under Rule 30. By order, the chancery 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 chancery 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 or by the
chancery court 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, surety, indemnitor,
insurer, 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 chancery 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 Statement. 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 chancery 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)(B) 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 chancery
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 (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 trialpreparation 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 the chancery court where the action is
pending. 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 chancery court action. The chancery 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 chancery
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 chancery court
directs.
(2) Ordering Discovery. If a motion for a protective order is wholly or
partly denied, the chancery court may, on just terms, order that any party or
person provide or permit discovery.
(3) Awarding Expenses. Rule 37(a)(5) applies to the award of expenses.
(d) Timing, Sequence of Discovery, and Electronic Delivery.
(1) Timing. Except in a proceeding exempted from initial disclosure under
Rule 26(a)(1)(B), or when authorized by these rules, by stipulation, or by
chancery court order, a party may not seek discovery from any source before
the period for initial disclosures has expired and that party has provided the
disclosures required under Rule 26(a)(1).
(2) Sequence. Unless the parties stipulate or the chancery 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.
(3) Electronic Delivery. All discovery responses and documents produced
by a party may be delivered but shall not be filed through the electronic filing
system unless the chancery court orders otherwise. If not delivered through
the electronic filing system, the response or document must be delivered via
an electronic sharing methodology as agreed upon or approved at the initial
conference. All documents delivered as a means of document production
shall contain a bates stamp number on each page, as directed by the
chancery court at the initial conference.
(e) Supplementing Disclosures and Responses.
(1) In General. A party who has made a 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 that 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 chancery court.
(2) Expert Witness. For an expert whose report must be disclosed under
Rule 26(a)(2)(B), the party’s duty to supplement extends both to information
included in the report and to information given during the expert’s deposition. Any additions or changes to this information must be disclosed by the
time the party’s pretrial disclosures under Rule 26(a)(3) are due.
(f) Discovery Conference. At any time after commencement of an action the
chancery court may direct the attorneys for the parties to appear before it for
a conference on the subject of discovery. The chancery court shall do so upon
motion by the attorney for any party if the motion includes:
(1) a statement of the issues as they then appear;
(2) a proposed plan and schedule of discovery;
(3) any expansion or further limitation proposed to be placed on discovery;
(4) any other proposed orders with respect to discovery; and
(5) a statement showing that the attorney making the motion has made a
reasonable effort to reach agreement with opposing attorneys on the matters
set forth in the motion. Each party and each party’s attorney are under a
duty to participate in good faith in the framing of a discovery plan if a plan
is proposed by the attorney for any party. Notice of the motion shall be served
on all parties. Objections or additions to matters set forth in the motion shall
be served not later than 14 days after service of the motion.
Following the discovery conference, the chancery court shall enter an order
tentatively identifying the issues for discovery purposes, establishing a plan
and schedule for discovery, setting limitations on discovery, if any; and
determining such other matters, including the allocation of expenses, as are
necessary for the proper management of discovery in the action. An order may
be altered or amended whenever justice so requires.
Subject to the right of a party who properly moves for a discovery conference
to prompt convening of the conference, the chancery court may combine the
discovery conference with a pretrial conference authorized by Rule 16.
(g) Signing Disclosures and Discovery Requests, Responses, and Objections.
(1) Signature Required; Effect of Signature. Every disclosure under Rule
26(a)(1) or (3) and every discovery request, response, or objection must be
signed by at least one attorney of record in the attorney’s own name--or by
the party personally, if unrepresented-and must state the signer’s address,
email address, and telephone number. By signing, an attorney or party
certifies that to the best of the person’s knowledge, information, and belief
formed after a reasonable inquiry:
(A) with respect to a disclosure, it is complete and correct as of the time
it is made; and
(B) with respect to a discovery request, response, or objection, it is:
(i) consistent with these rules and warranted by existing law or by a
nonfrivolous argument for extending, modifying, or reversing existing
law, or for establishing new law;
(ii) not interposed for any improper purpose, such as to harass, cause
unnecessary delay, or needlessly increase the cost of litigation; and
(iii) neither unreasonable nor unduly burdensome or expensive, considering the needs of the case, prior discovery in the case, the amount in
controversy, and the importance of the issues at stake in the action.
(2) Failure to Sign. Other parties have no duty to act on an unsigned
disclosure, request, response, or objection until it is signed, and the chancery
court must strike it unless a signature is promptly supplied after the
omission is called to the attorney’s or party’s attention.
(3) Sanction for Improper Certification. If a certification violates this rule
without substantial justification, the chancery court, on motion or on its
own, must impose an appropriate sanction on the signer, the party on whose
behalf the signer was acting, or both. The sanction may include an order to
pay the reasonable expenses, including attorney’s fees, caused by the
violation.
History
History: Adopted September 21, 2021, effective December 1, 2021; amended January 27, 2026, effective March 30, 2026.
Provenance
- Source
- wyocourts.gov
- Retrieved
- 2026-09-24
- Edition
- 2026-09-24
- Content hash
d016cc7dc85fd53900c173a7a60b1de2b23368ee5bf3e8770a1ff5a344c399a0
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