Nope, as etailers would only deal with the original purchaser via the supplied , contact deatils.
So nobody has ever moved house or got a new phone number / email address in the time they own a warranty product?
I think realistically if somebody comes to any retailer or vendor making a warranty claim and does have the original invoice, there isnt a whole lot the retailer can do to reject it.
The claimee could simply 'pretend' to be the person named on the invoice and claim to have moved house and changed email address.
It cant really be worth trying to 'disprove' this for the retailer. As already pointed out.... how far do you go? Photo ID? Proof they moved house?
Just not worth it.
There is a lot swirling around about void warranties. Weather its replacing thermal pads, selling cards or w/e else. I think in all cases the same is true.
Provide the retailer or vendor AS LITTLE information as is required to successfully get your claim accepted.
This does not mean straight up lie to them. There is just no need for you to volunteer information that could be used to void your claim.
Dont tell them you changed the thermal pads, don't mention you are not the original buyer.
If challenged on this, for example they say "your name isn't the same as on the invoice you provided" , you can claim "my brother in law purchased this for me as a gift" or "I moved house".
If you open a claim saying "Hi, my GPU failed. I swapped the cooler with a waterblock and purchased it from ebay but have the original invoice", expect your claim to be rightly rejected.
If you open the claim instead "Hi, my GPU failed. I have the original invoice. It fails to boot in multiple PCs", your far more likely to get your claim accepted, without ever having flat out lied.
Just my $0.02... Never had a warranty claim rejected myself. Thankfully they have been far and few between.