Gerber products sold in the US carry a limited lifetime warranty covering the original end-user purchaser or giftee for as long as they own the product. Outside North America it is a 25-year limited warranty. It covers defects in materials and workmanship and excludes normal wear, sharpening, misuse and unauthorized modification.
Gerber's wording extends coverage to the giftee as well as the purchaser, which is unusual and genuinely useful if you are buying a Gerber as a present. Kershaw, by contrast, restricts coverage to the original owner and makes it non-transferable.
Outside North America the term is 25 years rather than lifetime.
Normal wear, sharpening, misuse and unauthorized modification. Sharpening being named explicitly is worth noting: a knife you have reprofiled aggressively is a knife you have modified.
The remedy is at Gerber's option and may be repair, replacement, substitution or refund.
Claims go to Gerber. See how to file a Gerber warranty claim.
Warranty terms are set by the manufacturer and can change. The maker's own warranty page, linked below, is the authority. We repeat what it says; we do not extend it, and a retailer cannot promise coverage a manufacturer has not offered.