OPINION
In this disсovery mandamus, we consider the duration of the attorney work product privilege. Relator Owens-Coming Fiberglas Corporation was ordered by Respondent, the Honorable Neil Caldwell, to produce some 11,000 pages of doсuments which Owens-Coming alleges are privileged. Owens-Coming requested mandamus relief from this order of the trial court, and the court of appeals, without opinion, denied the motion for leave to file petition for writ of mandamus. We cоnditionally grant the writ.
Owens-Coming was sued in Brazoria County in two asbestos personal injury actions. 1 Discovery in these cases proceeded, and Owens-Coming, in response to the plaintiffs’ requests, produced approximate *750 ly 35,700 pages of documents for which it claimed no privilege. Owens-Coming also identified some 11,000 pages of documents which it claimed were privileged under the attorney-client and work product privileges. Tex.R.Civ.Evid. 503; Tex.R.Civ.P. 166b(3). The plaintiffs filed motions to compеl discovery of these documents, and Owens-Coming filed motions for protection in response.
The trial court’s master in chancery conducted an in camera review of the claimed privileged documents. The master also held related hearings over a five-week period. At the conclusion of her in camera review, the master prepared reports containing her recommended disposition of the parties’ motions. The master recommended that, of the 11,000 pages claimed privileged, the trial court exclude from discovery one page on the basis of the work product privilege. No other documents were recommended to be excluded on the basis of privilege. Ninety-seven pages were recommended for exclusion on the basis of irrеlevance.
On October 18, 1990, the trial court issued an order which adopted the recommendations of the master in their entirety. The discovery order signed by the trial court included the following grounds for compelling production of the documents:
1. The documents were not prepared by attorneys or attorneys’ agents as part of the defense of or in anticipation of the instant cases.
2. The assertion of a “state of the art” defense by Owens-Coming was an offensive use of the rales governing privilege and constituted a waiver of the privilege.
In seeking mandamus relief here, Owens-Coming argues that the trial court abused its discretion in ruling that work product from other cases was discoverable because it had not been generated specifically in defense of the instant cases.
In Texas, the procedural rule governing the work product privilege does not directly address the question whether work product loses its proteсted status when it is requested to be produced in another case. The rale provides:
Exemptions. The following matters are protected from disclosure by privilege:
(a) Work Product. The work product of an attorney, subject to the exceрtions of Texas Rule of Civil Evidence 503(d) which shall govern as to work product as well as to attorney-client privilege.
Tex.R.Civ.P. 166b(3).
The primary purpose of the work product rale is to shelter the mental processes, conclusions, and legаl theories of the attorney, providing a privileged area within which the lawyer can analyze and prepare his or her case.
Axelson, Inc. v. Mcllhany,
One court of appeals has disregarded the underlying purpose of Rule 166b(3) by interpreting the rale as limiting the work product privilege to materials рrepared for the suit in which discovery is sought.
DeWitt & Rearick, Inc. v. Ferguson,
*751
Indications of the high degree of protection to be afforded the mental processes of an attorney exist in both the rulеs and our case law. For example, the rules contain a “substantial need” exception for materials privileged under the rules governing party communication and witness statement privileges, but no such exception exists for work product.
See
Tex.R.Civ.P. 166b(3)(e). As for case law, this court specifically pointed out in
Garcia v. Peeples,
Were the work product protection not continuing, a situation would result in which a client’s communications to an attorney, which must be full, frank and open, are protected, Tex.R.Civ.Evid. 503, but the same attorney’s work product done in furtherance of such attorney-client relationship is not. This anomaly clearly cannot be allowed.
Further, any party which is a repeat litigant 3 clearly must be allowed to develop an overall legal strategy for all the cases in which it is involved. This is true whether the litigant is a corporation sued repeatedly in products liability, a civil rights organization suing repeatedly to enforсe desegregation of schools, or an environmental group which must sue again and again to redress environmental wrongs.
Our ruling is compatible with interpretations given to the federal rule governing attorney work product, Fed.R.Civ.P. 26(b)(3). This rule, which had its gеnesis in
Hickman v. Taylor,
In addition, the majority of state courts which have considered the question whether the work product privilege applies to material prepared for terminated litigation have held that the privilege is perpetual. For example, in
Kuiper v. District Court,
For all these reasons, we hold that the work product privilege in Texas is of con- *752 turning duration. The trial court abused its discretion in ordering discovery of work product documents prepared for previous litigation.
Next we reach the issue whether Owens-Coming did indeed, as held by the trial court, waive its claimed privileges by asserting а “state of the art” defense. Under the doctrine of waiver by offensive use, a party may not “use one hand to seek affirmative relief in court and with the other hand lower an iron curtain of silence around the facts of the casе.”
Ginsberg v. Fifth Court of Appeals,
In balancing the overall risk and utility of a product, thе fact finder in a products liability suit may consider the availability or nonavailability of feasible alternatives. While descriptive of the defendant’s evidence in this regard, “state of the art” is not a true defense or bar to recovery in а products liability action.
See Boatland of Houston, Inc. v. Bailey, 609
S.W.2d 743, 749 n. 3 (Tex.1980); J.H. EDGAR, JR. & J. SALES, 2 TEXAS TORTS AND REMEDIES § 42.01[2][D], at 42-9 (1991). Because plaintiffs concede that they must show Owens-Coming knew or should have known of its product’s hazards at a time when a clear, cautionary statement of the exact nature of the dangers cоuld have been given,
Bituminous Casualty Corp. v. Black & Decker Mfg. Co.,
In sum, we hold that the trial court abused its discretion in ordering production of work product documents on the ground they were not prepared in anticipation of the instant litigation, and in holding that Owens-Coming’s denial that it knew its products were dangerous resulted in a waiver of its work product privilege. We conditionally grant the writ of mandamus. The trial court is directed to review the requested documents to determine the applicability of the work product privilege consistent with this opinion. If the court fails to do so, writ will issue.
Notes
. Tommie L. Heathman v. Owens-Coming Fiberglas Corp., No. 87-C-1934, and Sherman A. Searls v. Owens-Coming Fiberglas Corp., No. 88-C-0615.
. While an attorney must be allowed to work with a degree of privacy, the protection granted under the work product doctrine does not extend to facts the attorney may acquire.
See Axelson,
. Owens-Corning states that it is a defendant in 90,000 products liability cases nаtionwide.
.
See, e.g., SCM Corp. v. Xerox Corp.,
But see, e.g., United States v. International Business Machs. Corp.,
.See, e.g., American Bldgs. Co.
v.
Kokomo Grain Co.,
