From the Case website:
"Yes. Case offers a limited lifetime warranty on its knives which warrants every Case knife to be free of manufacturing defects for the life of the owner. We will repair or replace with a new Case knife, at our option, any Case knife that is defective. Case does not warrant against normal wear or misuse. Please allow four to six weeks for repair. If you believe your knife has a manufacturing defect, mail your knife along with a written explanation of the problem to: W. R. Case & Sons Cutlery Co., Repairs Department, 50 Owens Ways, Bradford, PA 16701. If you have an additional question about a Case knife repair, you can click here to email our Repair Center."
If I had a 30 year old case that had never been used and the scale cracked, I might send it in.
If I had a 30 day old Case knife I dropped off a ladder and broke the scale, I probably wouldn't ask for a "free" repair.