Opinion
Plaintiffs Bruce Powell and Dale Mereness appeal from a summary judgment granted in favor of defendant Standard Brands Paint Company (Standard Brands) in an action for personal injuries. We affirm.
Factual and Procedural Background
As relevant to this appeal, the complaint prepared by plaintiffs’ attorneys stated that defendant Standard Brands and other defendants were the suppliers or manufacturers “of certain equipment and cleaning solvents, specifically being, but not limited to a buffer and/or thinner referred to herein.” The complaint further alleged that Standard Brands and other defendants “negligently and carelessly operated, controlled, warned, supplied, maintained, managed, designed, manufactured, or modified said buffer and/or thinner which proximately caused the injuries and damages to plaintiff as herein described.” Paragraph X of the complaint pleaded in pertinent part, “That on or about June 10, 1982, . . . while plaintiff was stripping a tile floor with said buffer and thinner, an explosion occurred due to the negligence of the defendants, and each of them, proximately causing the hereinafter described injuries and damages to plaintiff.” (Italics added.)
*361 As relevant here, plaintiff sought recovery for damages on theories of negligence and strict liability.
In moving for summary judgment, Standard Brands competently showed that plaintiffs commenced work on June 9, 1982, using lacquer thinner supplied by Standard Brands to remove sealer from ceramic tile. They worked without incident throughout the evening until they had used up the Standard Brands lacquer thinner. However, plaintiffs were unable to finish the job on June 9. The following day, June 10, plaintiffs’ employer ordered two five-gallon containers of lacquer thinner from codefendant Harris Automotive (Harris). This lacquer thinner was manufactured by codefendant Grow Chemical Coatings Company (Grow). 1 Working in an area approximately 25-50 feet from where they had worked the previous evening, plaintiffs commenced pouring the Grow lacquer thinner on the tile floor and buffing the thinner with the electric buffer. During this operation an explosion occurred, seriously injuring both plaintiffs and giving rise to the instant lawsuit.
Plaintiffs relied primarily on the declaration of plaintiff Powell. 2 Powell declared that the lacquer thinner purchased from Standard Brands contained neither warnings nor safety instructions and that “Had anyone at Standard Brands advised us of the dangerous nature of lacquer thinner or of its highly flammable characteristics, I would not have used it on the job and would not have been using it at the time of my injury.”
The trial court granted the motion and plaintiffs appeal from the summary judgment entered in favor of Standard Brands.
Discussion
The purpose of a motion for summary judgment is to determine if there are any triable issues of material fact, or whether the moving party is
*362
entitled to judgment as a matter of law.
(Miller
v.
Bechtel Corp.
(1983)
As best we understand it, plaintiffs assert on appeal that Standard Brands owed them a duty to warn them of the dangerous properties of its lacquer thinner, that it breached its duty to warn, and that its failure to warn was a legal proximate cause of the injuries suffered by plaintiffs. To our knowledge, no reported decision has held a manufacturer liable for its failure to warn of risks of using its product, where it is shown that the immediate efficient cause of injury is a product manufactured by someone else. Unfortunately, in addressing the merits of plaintiffs’ important and novel contention, we find the meagre brief filed by plaintiffs’ attorneys of little assistance. 3 Needless to say, however, we believe our own research has produced a correct result.
The premise of plaintiffs’ argument is clearly correct; a manufacturer owes a foreseeable user of its product a duty to warn of risks of using the product. (See, e.g.,
Finn
v.
G. D. Searle & Co.
(1984)
Standard Brands has not refuted plaintiffs’ pleaded assertions that said defendant owed plaintiffs a duty to warn of risks of its product and that it breached its duty. However, the evidence is undisputed that the immediate efficient cause of plaintiffs’ injuries was the explosion of a product manufactured not by Standard Brands but rather by Grow. The question posed is whether Standard Brands’ failure to warn was a legal proximate cause of plaintiffs’ injuries. We conclude, in the circumstances of this case, it was not.
As a general rule, the imposition of liability in tort for personal injuries depends upon a showing by the plaintiff that his or her injuries were caused by the act of the defendant or by an instrumentality under the defendant’s control.
(Sindell
v.
Abbott Laboratories, supra,
In
Bigbee
v.
Pacific Tel. & Tel. Co., supra,
our Supreme Court characterized the questions of duty and proximate cause as presenting “the same issue in different guises.” (
“(a) knows or has reason to know that the chattel is or is likely to be dangerous for the use for which it is supplied, and
“(b) has no reason to believe that those for whose use the chattel is supplied will realize its dangerous condition, and
“(c) fails to exercise reasonable care to inform them of its dangerous condition or of the facts which make it likely to be dangerous.”
*364
Where a defendant has committed a wrongful act, and where a third person also commits a later wrongful act, and both are alleged to have caused plaintiff’s injuries, the courts have asked whether the subsequent act of the third party was a superseding cause that served to break the requisite chain of causation between defendant’s wrongful act and the injury. (See, e.g.,
Stultz
v.
Benson Lumber Co.
(1936)
On the undisputed facts tendered in this case, we conclude the explosion of Crow’s product, and plaintiffs’ consequent injuries, were not reasonably foreseeable consequences of Standard Brands’ failure to warn as a matter of law. We explain.
Although there appears to be some uncertainty about the knowledge required of a manufacturer to justify liability for failure to warn of
its
product (see
Finn
v.
G. D. Searle & Co., supra,
From the foregoing, it follows that if plaintiff’s theory of liability (asserted on appeal) has any validity, it would be limited to situations where the risks of use of the product immediately causing injury are identical to the risks of use of the product previously used with inadequate warnings. *365 No other risks are reasonably foreseeable. As a practical matter, a contrary conclusion would require each manufacturer to ascertain the risks of products manufactured by others within an industry and to warn of the highest risks a consumer might encounter. Such a requirement would place on each manufacturer an untoward duty and would penalize inventive manufacturers whose products are, in fact, of lower risk than other products in the industry.
We therefore believe the theory of liability now asserted by plaintiffs would require at a minimum that: (a) the product immediately causing injury (product B) was subject to the same generic description as the product previously used with inadequate warnings (product A), e.g., “lawnmower,” “electric drill,” “aspirin,” etc.; (b) product B was generally used for the same purposes as product A by consumers; (c) product B’s warnings were inadequate; and (d)
product B had risks of use identical to those of product A.
This theory of liability gains credence to the extent a genetically identical product (with presumably identical risks of use) is made by a limited number of manufacturers in an industry, and there is an industry-wide practice of omitting warnings on the product. (See, e.g.,
Hall
v.
E. I. Du Pont de Nemours & Co., Inc.
(E.D.N.Y. 1972)
In this case we need not decide whether a manufacturer who fails to warn of its product may be held liable for injuries immediately caused by the use of a product with the same generic description and identical risks of use, because it is clear plaintiffs’ attorneys never pleaded facts necessary to support that legal theory, nor anything remotely resembling it, in the trial court. (See
Finn
v.
G. D. Searle & Co., supra,
The complaint prepared by plaintiffs’ attorneys did not plead that Standard Brands’ absence of warnings caused plaintiffs to use a genetically identical product, nor a product with the same risks of use, nor even a substantially similar product, without knowledge of its dangers. Indeed, the complaint pleads no relationship of similarity whatsoever between the Standard Brands and the Grow products. Rather, the complaint prepared by plaintiffs’ attorneys states plaintiffs were using Standard Brands’ product when an explosion occurred. The complaint tendered a theory that the Standard Brands product was the immediate efficient cause of injury, i.e., plaintiffs were using it when it exploded. That pleading was the one defendant had to encounter on its motion for summary judgment. (Metromedia, Inc. v. City of San Diego, supra, 26 Cal.3d at p. 885.) Standard Brands showed, contrary to plaintiffs’ pleading, plaintiffs were not using its product at the time of the explosion. Standard Brands therefore refuted the only theory of causation pleaded by plaintiffs’ attorneys. There was no other viable theory of causation pleaded, 7 and the trial court had no duty to invent one. “Neither a trial court nor a reviewing court in a civil action is obligated to seek out theories plaintiff might have advanced, or to articulate for him that which he has left unspoken.” (Finn v. G. D. Searle & Co., supra, 35 Cal.3d at pp. 701-702.)
We conclude, on the facts pleaded and adjudicated on the motion for summary judgment, it was not reasonably foreseeable as a matter of law that Standard Brands’ failure to warn of risks of its product would cause plaintiffs to suffer injuries while using the product of another. (See
Richards
v.
Stanley, supra,
Disposition
The judgment is affirmed.
Regan, Acting P. J., and Carr, J., concurred.
Notes
The declarations submitted on the motion for summary judgment do not indicate whether the Grow thinner contained warnings. Defendant asks us to take judicial notice of evidentiary materials submitted by codefendant Harris in the trial court in connection with a motion for summary judgment heard after this case was on appeal. Since the materials were not before the trial court when it ruled on Standard Brands’ motion, the request for judicial notice is denied. Plaintiffs’ complaint alleged that defendants Grow and Harris wrongfully failed to warn of risks of their product. The burden was on defendant Standard Brands to refute those pleaded allegations by competent evidence. (See
Conn
v.
National Can Corp.
(1981)
Plaintiffs’ attorneys filed an inordinately truncated response to the motion for summary judgment. Their two and one-half page memorandum of points and authorities cited only one
case—Sindell
v.
Abbott Laboratories
(1980)
The brief simply incorporates the reference to Sindell v. Abbott Laboratories, supra, from the opposition to the summary judgment motion (see fn. 2, ante) and cites two additional cases.
Section 388 of both the Restatement First and Second of Torts states: “One who supplies directly or through a third person a chattel for another to use is subject to liability to those whom the supplier should expect to use the chattel with the consent of the other or to be endangered by its probable use, for physical harm caused by the use of the chattel in the manner for which and by a person for whose use it is supplied, if the supplier
Section 442A of the Restatement Second of Torts provides: “Where the negligent conduct of the actor creates or increases the foreseeable risk of harm through the intervention of another force, and is a substantial factor in causing the harm, such intervention is not a superceding cause.” (Italics added.)
This would seem to be particularly so where there is little brand-name loyalty by consumers using the products, so any given manufacturer could expect consumers to use genetically identical products made by others in one industry.
Nor did plaintiffs’ attorneys seek leave to amend their complaint. Nor was evidence presented on the motion for summary judgment indicating the Standard Brands and Grow products were genetically identical or had the same risks of use. Indeed, the only evidence on the question before the court was contained in the deposition testimony of Gary Fischer, who worked with plaintiffs and actually purchased the Grow lacquer thinner for their use. Fischer testified he had heard after the accident that the Grow lacquer thinner “was an extremely flammable lacquer thinner.” The record presents no basis upon which an appropriate amendment of the complaint may be implied. (Compare
Davis
v.
Cordova Recreation & Park Dist.
(1972)
We note in passing that
Sindell
v.
Abbott Laboratories, supra,
