Colorado § 13-21-404 - Inadmissible evidence.

Full text of Colorado Colorado Revised Statutes § 13-21-404 — Inadmissible evidence., with citation guidance and answers to common questions.

§ 13-21-404. Inadmissible evidence.

In any product liability action, evidence of any scientific advancements in technical or other knowledge or techniques, or in design theory or philosophy, or in manufacturing or testing knowledge, techniques, or processes, or in labeling, warnings of risks or hazards, or instructions for the use of such product, where such advancements were discovered subsequent to the time the product in issue was sold by the manufacturer, shall not be admissible for any purpose other than to show a duty to warn.

Source: L. 77: Entire part added, p. 821, § 2, effective July 1.

ANNOTATION

Duty to warn. After a product involving human safety has been sold and dangerous defects in design have come to the manufacturer's attention, the manufacturer has a duty either to remedy such defects, or if a complete remedy is not feasible, to give users adequate warnings and instructions concerning methods for minimizing danger. Downing v. Overhead Door Corp., 707 P.2d 1027 (Colo. App. 1985).

Evidence of preaccident warning. Evidence that the defendant prepared and distributed warnings regarding the product prior to the accident is admissible to show that the defendant had breached its duty to warn, as such evidence is probative of defendant's preaccident knowledge of the danger inherent in the product, and the feasibility of giving a warning to make the product less dangerous. Downing v. Overhead Door Corp., 707 P.2d 1027 (Colo. App. 1985).

Evidence of postaccident design change admissible. Since a postaccident design change may bear directly on the issue of feasible alternatives to the defective design, evidence of such a change may be admitted. Roberts v. May, 41 Colo. App. 82, 583 P.2d 305 (1978) (cause of action arose before effective date of section).

Limitation on evidence of subsequent remedial measures applicable in diversity-based action and controls the application of Fed. Rule of Evid. 407 but not in this case since cause of action arose before effective date of section. Moe v. Avions Marcel Dassault-Breguet Aviation, 727 F.2d 917 (1984).

Evidence of alternative concepts implemented later that were known as possible at time of manufacture is admissible under this section. Meller v. Heil Co., 745 F.2d 1297 (10th Cir. 1984).

Scientific advancements construed as new discoveries after original construction. Meller v. Heil Co., 745 F.2d 1297 (10th Cir. 1984).

For court's refusal to apply this section to new warning label, see Uptain v. Huntington Lab, Inc., 723 P.2d 1322 (Colo. 1986).

Source: official Colorado text · Last verified 2026-08-27

Frequently Asked Questions About Colorado § 13-21-404

What does Colorado Revised Statutes § 13-21-404 cover?

Section 13-21-404 ("Inadmissible evidence.") is part of the Colorado Revised Statutes, the codified statutory law of Colorado. It sets out the legal rule or procedure described in the text above. Statutes are amended regularly, so always verify against the official source.

How do I cite Colorado § 13-21-404?

A common citation format is "Colorado Revised Statutes § 13-21-404" (Colorado). Legal writing may require the code abbreviation, section number, and year or edition. Match the style required by your court, professor, or publisher.

Is this the official text of Colorado law?

No. This page is for research and education and may not include the most recent amendments. For official current law, check the Colorado official source linked on this page or consult a licensed Colorado attorney.

How does Colorado § 13-21-404 apply to my situation?

Statutes are interpreted in context, and application depends on your specific facts. Only a licensed attorney in Colorado can advise on how this section applies to you. Contact your state or local bar association for a referral.

Sources & Verification

Not legal advice. Verify against the official source and consult a licensed attorney in Colorado.