One of the selling factors for me to buy the Calphalon's Contemporary Nonstick fry pan set from Bed Bath and Beyond was that Calphalon advertised a lifetime warranty.
After years of regular use, the nonstick ability of my pans was mostly gone. So I decided to test out Calphalon's life warranty.
I filed a claim online and am happy to report that my replacement pans came in about 75 days. They sent me an upgrade because they are no longer making the Contemporary line.