I got a Farberware Millenium pan (a huge one) which had a 20-year guarantee on the nonstick coating. But after about 5 years, everything started to stick to it. I'd take advantage of the guarantee, but I can't find it and I no longer have the receipt for the pan.
Check online - maybe you can still get them to take care of it, especially if they have been making the pans for less than 20 years!