There seem to be many lenses being sold on Ebay as "NEW" by individuals who buy a kit and then sell off the lens since they do not want or need it.
I have a customer who bought a Canon 24-105mm F4L lens this way last month for $750, a pretty good bargain, and it had the USA warranty card with it. She filled out the warranty card and submitted it to Canon.
10 days ago the AF quit working in the lens, I even tried it on two of my bodies and it would not AF so she sent it in to Canon for repairs. Today she got an email from Canon that the AF drive motor needed to be replaced and it would cost $385. They would proceed with repairs when she authorized them and made full payment. She called Canon, in my presence, to protest the charge and try to get it repaired under the warranty as registered. Canons response was that the warranty is valid only to the original purchaser and that her "receipt" from an unauthorized retailer (an individual) constituted a "resale" and voided the factory warranty. She is stuck for the repair costs, or Canon will return the lens to her as-is at their expense should she decide not to have it repaired.
Bottom line here is, learn the lesson, there are no great "bargains" to be had on Ebay by buying a NEW item from one of the hundreds of unauthorized resellers listing "new" bodies or lenses there. If the item was not purchased through an authorized retailer in the USA, you simply have NO WARRANTY to fall back on. My customer is now having the lens repaired at her expense and she will now have more money in that lens than if she had bought it new through any retailer in the country, even if she had bought direct from Canon, and she still will have no warranty on the lens.
Trying to save a few bucks on quality camera gear will pretty much always cost you more than if you bit the bullet and bought the new product from a proper source.
Just a friendly warning for anyone out there on UHH looking at some of these "bargains" they may find on Ebay. There are authorized retailers using Ebay, such as Adorama, Cameta, Roberts and KEH, but there are a LOT more that are not authorized retailers. Beware.

Also, there are a lot of retailers on Ebay that state they are "authorized", but are selling grey market. Same caution here.

You must be joking, right? Does this mean that if you buy a new Canon lens and give it to your wife for Christmas there is no warranty on it if she sends it to repair in her own name as she was not the original buyer? Seems like Canon is really cheating on someone here. In my country there is 2 years warranty on such things, no questions asked about how many owners there are. But you must have the original receipt for the purchase to prove you are within the 2 years warranty period. How can a warranty become invalid if you change the ownership of a lens? What harm does that do to the lens?

This thread must be a joke, it is most stupid thing I have ever heard of regarding warranty.

There seem to be many lenses being sold on Ebay as "NEW" by individuals who buy a kit and then sell off the lens since they do not want or need it.
I have a customer who bought a Canon 24-105mm F4L lens this way last month for $750, a pretty good bargain, and it had the USA warranty card with it. She filled out the warranty card and submitted it to Canon.
10 days ago the AF quit working in the lens, I even tried it on two of my bodies and it would not AF so she sent it in to Canon for repairs. Today she got an email from Canon that the AF drive motor needed to be replaced and it would cost $385. They would proceed with repairs when she authorized them and made full payment. She called Canon, in my presence, to protest the charge and try to get it repaired under the warranty as registered. Canons response was that the warranty is valid only to the original purchaser and that her "receipt" from an unauthorized retailer (an individual) constituted a "resale" and voided the factory warranty. She is stuck for the repair costs, or Canon will return the lens to her as-is at their expense should she decide not to have it repaired.
Bottom line here is, learn the lesson, there are no great "bargains" to be had on Ebay by buying a NEW item from one of the hundreds of unauthorized resellers listing "new" bodies or lenses there. If the item was not purchased through an authorized retailer in the USA, you simply have NO WARRANTY to fall back on. My customer is now having the lens repaired at her expense and she will now have more money in that lens than if she had bought it new through any retailer in the country, even if she had bought direct from Canon, and she still will have no warranty on the lens.
Trying to save a few bucks on quality camera gear will pretty much always cost you more than if you bit the bullet and bought the new product from a proper source.
Just a friendly warning for anyone out there on UHH looking at some of these "bargains" they may find on Ebay. There are authorized retailers using Ebay, such as Adorama, Cameta, Roberts and KEH, but there are a LOT more that are not authorized retailers. Beware.

Also, there are a lot of retailers on Ebay that state they are "authorized", but are selling grey market. Same caution here.

Noting mythical about my country. I am in Norway and I can tell you that the warranty here is the same as in all Scandinavia and European Union. I do not know about warranty in the 3rd world and rest of it. But I have never before heard of a warranty that is valid for the buyer of thing, not the thing itself. It is unbelievable stupid warranty.

Is it the same with cars in USA, no more warranty if you sell the car? Here we have warranty on cars, often 5 years or 100.000 kilometers, sometimes more, and it makes no difference if you sell the car, new owner gets what is left of the warranty time and kilometers.