Johnson v. Honeywell International Inc.

Opinion

ARMSTRONG, J.

“A manufacturer is not liable to a sophisticated user of its product for failure to warn of a risk, harm, or danger, if the sophisticated user knew or should have known of that risk, harm, or danger.” (Johnson v. American Standard, Inc. (2008) 43 Cal.4th 56, 71 [74 Cal.Rptr.3d 108, 179 P.3d 905] (hereinafter, American Standard).) This is the sophisticated user defense, and it applies to negligence and strict liability warning defect claims. (Id. at p. 65.)

In this case, which comes to us after a demurrer was sustained without leave to amend, we are asked to determine…