The frequency or extent of use of the discovery methods set forth in paragraph (a) shall be limited
by the Court if it determines that: (i) the discovery sought is unreasonably cumulative or
duplicative, or is obtainable from some other source that is more convenient, less burdensome, or
less expensive; (ii) the party seeking discovery has had ample opportunity by discovery in the
action to obtain the information sought; or (iii) the discovery sought is not 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. The Court may act upon its own initiative after
reasonable notice or pursuant to a motion under paragraph (c).
(2) Insurance agreements. A party may obtain discovery of the existence and contents of any
insurance agreement under which any person carrying on an insurance business may be liable to
satisfy part or all of a judgment which may be entered in the action or to indemnify or reimburse for
payments made to satisfy the judgment. Information concerning the insurance agreement is not by
reason of disclosure admissible in evidence at trial. For purposes of this subparagraph, an application
for insurance shall not be treated as part of an insurance agreement.
(3) Trial preparation: Materials. Subject to the provisions of paragraph (b) (4) of this rule, a party
may obtain discovery of documents, electronically stored information, and tangible things otherwise
discoverable under paragraph (b)(1) of this rule and prepared in anticipation of litigation or for trial
by or for another party or by or for that other party’s representative (including the other party’s
attorney, consultant, surety, indemnitor, insurer, or agent) only upon a showing that the party seeking
discovery has substantial need of the materials in the preparation of the party’s case and that the party
is unable without undue hardship to obtain the substantial equivalent of the materials by other means.
In ordering discovery of such materials when the required showing has been made, the Court shall
protect against disclosure of the mental impressions, conclusions, opinions, or legal theories of an
attorney or other representative of a party concerning the litigation.
A party may obtain without the required showing a statement concerning the action or its subject
matter previously made by that party. Upon request, a person not a party may obtain without the
required showing a statement concerning the action or its subject matter previously made by that
person. If the request is refused, the person may move for a Court order. The provisions of Rule
37(a)(4) apply to the award of expenses incurred in relation to the motion. For purposes of this
paragraph, a statement previously made is (A) a written statement signed or otherwise adopted or
approved by the person making it, or (B) a stenographic, mechanical, electrical, or other
recording, or a transcription thereof, which is a substantially verbatim recital of an oral statement
by the person making it and contemporaneously recorded.
(4) Trial preparation: Experts. Discovery of facts known and opinions held by experts, otherwise
discoverable under the provisions of paragraph (b)(1) of this rule and acquired or developed in
anticipation of litigation or for trial, may be obtained only as follows:
(A)(i) A party may through interrogatories require any other party to identify each person whom
the other party expects to call as an expert witness at trial, to state the subject matter on which the
expert is expected to testify, and to state the substance of the facts and opinions to which the
expert is expected to testify and a summary of the grounds for each opinion. (ii) Upon motion, the
Court may order further discovery by other means, subject to such restrictions as to scope and
such provisions, pursuant to paragraph (b)(4)(C) of this rule, concerning fees and expenses as the
Court may deem appropriate.
(B) A party may discover facts known or opinions held by an expert who has been retained or
specially employed by another party in anticipation of litigation or preparation for trial and who is
not expected to be called as a witness at trial, only as provided in Rule 35(b) or upon a showing
of exceptional circumstances under which it is impracticable for the party seeking discovery to
obtain facts or opinions on the same subject by other means.
(C) Unless manifest injustice would result, (i) the Court shall require that the party seeking
discovery pay the expert a reasonable fee for time spent in responding to discovery under
paragraphs (b)(4)(A)(ii) and (b)(4)(B) of this rule and (ii) with respect to discovery obtained
under paragraphs (b)(4)(A)(ii) of this rule the Court may require, and with respect to discovery