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Under the current rules, the starting point concerning discovery about experts is Rule 195 — appropriately entitled “Discovery Regarding Testifying Expert Witnesses.” This article will review the expert witness rules starting with Rule 195 and also provide additional general information concerning expert witnesses. This is not a paper that discusses Robinson/Havner and its progeny. Finally, at the end are some forms that may help you in your everyday practice.
It is important to note there are basically four different types of experts:
Discovery from these experts differs, depending upon their classification.

A. Testifying Expert Witnesses – Rule 195. The basic rule is that the only three ways to discover information about testifying expert witnesses is through a Request for Disclosure under Rule 194, depositions and expert reports. Rule 195.1 states the following:
A party may request another party to designate and disclose information concerning testifying expert witnesses only through a request for disclosure under Rule 194 and through depositions and reports as permitted by this rule.
B. Rule 194 Governs Requests for Disclosure. The particular matters pertaining to expert witnesses are found under Rule 194.2(f) which allows a party to request disclosure of the following for any testifying expert witness:
C. The Scope of Expert Discovery. Although the scope of Rule 194.2(f) concerning testifying experts allows for discovery of this information only through requests for disclosure, Rule 192.3 further defines the information that can be obtained through depositions and expert reports. Rule 192.3 entitled “Scope of Discovery” allows for the following to be discovered from testifying and not purely consulting experts:
A party may discover the following information regarding a testifying expert or regarding a consulting expert whose mental impressions or opinions have been reviewed by a testifying expert:
- The expert’s name, address, and telephone number;
- The subject matter on which a testifying expert will testify;
- The facts known by the expert that relate to or form the basis of the expert’s mental impressions and opinions formed or made in connection with the case in which the discovery is sought, regardless of when and how the factual information was acquired;
- The expert’s mental impressions and opinions formed or made in connection with the case in which discovery is sought, and any methods used to derive them;
- Any bias of the witness;
- All documents, tangible things, reports, models, or data compilations that have been provided to, reviewed by, or prepared by or for the expert in anticipation of a testifying expert’s testimony;
- The expert’s current resume and bibliography.
Tex. R. Civ. P. 192.3(e).
D. Non-Retained Testifying Experts. These experts, oftentimes treating physicians, police officers, or other experts who may be involved in the specific facts of the case, are treated differently than retained experts. There are five ways to discover information from non-retained testifying experts:
Comment 2 to Rule 195 provides the greater latitude for discovery versus retained testifying experts.
E. Discoverable Consulting Experts. To obtain information about discoverable consulting experts, a party may use requests for disclosures, interrogatories, requests for admissions, or any other type of discovery.
F. Conflict Between Testifying Experts and Discoverable Consulting Experts. For testifying experts, discovery is limited to only the requests for disclosure, oral depositions, and expert reports. Tex. R. Civ. P. 195.1. However, with discoverable consulting experts, (i.e., experts whose mental impressions or opinions have been reviewed by a testifying expert) there is no limitation expressed in the rules and traditional means of discovery should be available to you.
G. Interrogatories and Testifying Experts. It is clear that interrogatories may not be used to inquire about testifying experts in cases filed after January 1, 1999. See Tex R. C. P. 195.1, 195.4. However, you can use interrogatories to inquire about consulting experts.
A suggested interrogatory on consulting experts would be as follows:
For any consulting experts whose mental impressions or opinions have been reviewed by a testifying expert, please state or provide all of the discovery authorized by Rule 192.3(e). A full and complete answer should include a list of cases in which they testified and witness fees paid within the last five (5) years.
H. Time-line for “designating experts”. Rule 195.2 sets the schedule for designating experts. Generally, unless otherwise ordered by the court, a party must designate experts by the later of the following dates:
If no requests for disclosure concerning experts has been served on a party, the party is not subject to the time tables of Rule 195.2. because the “designation” of testifying experts means response to Rule 194.2(f). Therefore, it is important that you send out this request for disclosure in every case.
Likewise, the scheduling of experts for deposition is based upon the time of “designation”. Thus, the schedule does not apply in the absence of disclosure requests.
Practice Tip: Regardless of the level of case you have, it is advisable to enter into a Rule 11 Agreement with all parties to agree on the exact dates for designation. This eliminates the calendar gymnastics that can be confusing. This also assumes the court you are in allows the agreement to be effective.
I. Scheduling depositions.
1. A party seeking affirmative relief must make the expert retained by, employed by, or otherwise under the control of the party available for deposition as follows:
a. If no expert report is produced when the expert is designated, then the party must make the expert available for deposition reasonably promptly after the expert is designated. However, if you cannot reasonably conclude the deposition within fifteen (15) days before the deadline for designating other experts, that deadline must be extended for other experts testifying on the same subject.
b. On the other hand, if an expert report is furnished when the expert is designated, the party need not make the expert available for deposition until reasonably promptly after all other experts have been designated.
2. A party not seeking affirmative relief must make an expert retained by, employed by, or otherwise under the control of the party, available for deposition reasonably promptly after the expert is designated and the experts testifying on the same subject for the party seeking affirmative relief have been deposed.
3. Non-retained testifying experts are treated differently. A party is not required to present a non-retained testifying expert for deposition, and a deposition of a non-retained testifying expert should be taken according to the same rules for deposing other non-parties.
J. Reports. The expert’s report should include all factual observations, tests, supporting data, calculations, photographs, and opinions of the expert. Tex. R. Civ. P. 195.5. The report should also state the expert’s opinions and the underlying basis for them.
1. Court-Ordered Reports. Rule 195.5 gives the court the authority to order an expert to reduce to tangible form the expert’s discoverable factual observations, tests, supporting data or calculations, photographs or opinions.
2. Effect of Report. When a party seeking affirmative relief produces an expert report, this report triggers the designation of the other party’s expert. Tex. R. Civ. P. 195.3(b). Comment 3 to Rule 195 states, “[a] party who does not wish to incur the expense of a report may simply tender the expert for deposition, but a party who wishes an expert to have the benefit of an opposing party’s expert’s opinions before being deposed may trigger designation by providing a report.” Thus, the rules envisioned that the opposing party must set forth their expert’s opinions before depositions are taken.
K. Amendment and Supplementation. Rule 193.5 is the general rule regarding amending or supplementing responses to written discovery. This rule also governs the amendment and supplementation of written discovery regarding a testifying expert. It should also be noted that you must amend or supplement your expert witnesses deposition testimony or written report only in regard to the expert’s mental impressions or opinions, and the basis for them. Tex. R. Civ. P. 195.6.
L. Cost of Expert Witness. Rule 195.7 basically states that you must pay to present your expert witness for deposition, including the preparation giving, reviewing, and correcting of the deposition.
The reason for employing an expert witness is really three-fold. First, the expert should be able to assist you in understanding your case. Second, the expert should be able to communicate to and educate the jury about the issues. Third, the expert should be able to compel the jury to decide for your side of the case. As such, your selection of an expert is critical and you should consider the following:
A. Professional background, including authoritative reputation.
B. Point of View.
C. Personal Characteristics.
A. Meeting the Expert. It is extremely important to meet with the expert well in advance of the deposition. Cross-examine the expert to make sure the expert is prepared to go forward with the deposition and has not forgotten essential facts. Review the expert’s file as well as any authoritative text the expert recommends. You should review the jury questions and instructions that will be asked at trial with the expert, including all definitions. Have the expert summarize his opinions in the case, list the basis for each opinion, supporting information for each opinion, review contradictory information, discuss limits on the opinions, and review the opposition’s likely position relative to each opinion. Additionally, do the necessary work to further strengthen the opinions of the expert, such as research for supporting documentation.
B. All Opinions. When you are meeting with the expert witness, emphasize the importance of hearing all of the opinions during this meeting, not just the ones that support your case. Have the expert point out both strengths and weaknesses. It is not unusual for the expert to miss an important fact that turns his perceived weakness into a strength. Take any literature or articles that support your position and verify with your expert that they are authoritative.
C. Robinson/Havner. From a layperson’s standpoint, you should discuss the admissibility requirements of Robinson, Broders, Kumho Tire, and Havner. Emphasize the need for a strong basis for each opinion and the reliability of the opinions given by the expert.
D. Multiple Experts. Because experts can conflict with each other, it is important to have your experts on the same page as much as possible. If possible, have your first testifying expert’s deposition transcribed and sent to your second testifying expert prior to his/her deposition. Disagreements between the two experts will be exploited and magnified in front of a jury and avoiding a conflict can factor into a successful result.
A. Preparation. In preparing for the opposing party’s expert testimony, it is helpful to consult with your own client and your own experts to determine the best way to prepare for and cross-examine the witness. Review the opposing expert’s report and look for any “holes” that are inconsistent with the facts or issues in your case. Have your experts review their report and, if possible, prepare cross-examination questions. In complex cases, it may be necessary for your expert to attend the opposing expert’s deposition.
B. Background. Do as much research on the expert’s background as possible before the deposition. Then, during the deposition, the expert should be pinned down on his or her background, education, testifying history, the specific work done on the case, his/her opinions, and the basis for each of those opinions. Also, it is helpful to determine whether the expert shares any common ideas or opinions with your expert. Further, if your expert is well known or known in the community, it would be helpful to have the opposing expert admit to the outstanding reputation of your expert.
C. Challenge the Expert. If the opposing expert takes certain facts as true and other facts as not true, determine the basis for his/her position. Challenge the witness with the other facts by using assumption questions and determine if the witness’ opinion will change. Determine if the expert is laboring under a mistaken assumption of fact, and then pin the expert down on whether, if this particular factual assumption is erroneous, his opinion would change. To determine if the expert is working from an erroneous factual basis, you must determine:
D. Help Make Your Case. Look to steal standard of care testimony, affirm your expert’s testimony, or answer jury questions your way, especially from the expert who is intellectually honest. Oftentimes, an inexperienced testifier will give far more than your opponent would have wanted.
E. Discredit the Expert’s Testimony. Look in the usual areas of bias or prejudice and mine for an unusual gem that will significantly damage the expert’s opinions or credibility. In order to do so, you must determine:
F. Prior Inconsistent Statements. There are a number of ways to obtain previous testimony or prior depositions on witnesses who are used more than a few times. Obtain as much testimony as you can to review prior to the deposition or trial. Check with:
G. Discovery Deposition v. Trial Deposition.

A. Sources for Expert Witnesses:
B. Practice Tip: Look for backup experts in the event your expert is successfully struck under a Robinson/Havner challenge. Also, consider adding a backup date for designating experts to replace those experts the court may strike.
Here are the items that you should consider requesting for every deposition.
A. The Expert Who Goes Too Far. The expert should be willing to concede some obvious points and not overstate his opinions. While it is important for the expert to stay strong on his opinions, it is equally important that the expert maintain credibility. Have the expert stick with the facts and not exaggerate.
B. Super Expert. Do not choose an expert who will stretch their personal expertise. One expert may not be able to cover all of the bases. The expert should understand he is a piece of the puzzle, not the whole box top.
C. The Expert With Credibility Problems. Look for obvious problems such as over-used experts or personal acquaintances. Check on previous deposition testimony, if available.
D. Overly Expensive Experts. Unless the expert is a world renowned or nationally known in a specific area, really expensive fees can be offensive to jurors. Explain this to the expert and try to negotiate on the hourly rate.
Send your expert all of the medical records, depositions, and other pertinent documents and materials, including the ones that do not help your case. If you fail to include the damaging information, it will destroy not only the expert’s credibility, but your credibility. It is permissible to instruct the expert to skim through depositions that may not be relevant to the issues the witness will be discussing. However, never forget that everything that you send to the expert, including your letters, is discoverable by your opponent.
A. Talk with your expert witness about his/her willingness and availability to testify live at trial. Be sure to tell your expert that it is extremely important to prepare again (after his/her deposition) for trial because he/she will not have a chance to read, sign, or change his testimony after trial. Spend the time necessary on the eve of trial with the expert to discuss any new facts or issues that have arisen since his deposition.
B. During the preparation process, be sure to review all of the expert’s handwritten notes to make sure they are consistent with the actual facts and issues of the case. With medical records and medical doctors, have the medical doctors review the handwritten notes in the medical chart to obtain their interpretation of what was written.
C. Ensure that you have obtained and reviewed all articles authored by the expert on the subject matter in question.
A. There is one controversial area for defense lawyers: whether or not they can meet with the plaintiff’s healthcare provider without the plaintiff’s permission or presence. In Hogue v. Kroger Store No. 107, 875 S.W. 2d, 477 (Tex. App. – Houston [1st Dist.] 1994, writ denied), the court held that the defendant’s ex parte meeting with the plaintiff’s treating physician was permissible because the plaintiff had placed his healthcare in controversy.
B. However, subsequent to the Hogue decision, a Texas federal court found to the contrary. See Perkins v. U.S., 877 F. Supp. 330 (E.D. Tex. 1995). In Perkins, the federal court questioned the advisability of allowing the defendant to meet with the plaintiff’s treating physicians and opined that to allow such a meeting would “extend unwitting carte blanche to defense lawyers, deciding themselves what is relevant and what is not.” Id. at 332-333.
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