Like many people when I bought my S4 I wanted to put a decent case on it to keep it from getting mangled. So I started out mistakenly buying what appeared to be a slim armor on Ebay. Once I got it, I realized it was likely a fake and Spigen confirmed it. Over the course of dealing with their rep I decided they seemed like a pretty decent company so I ordered a Glas.tr then a week or so later placed and order for a Neo Hybrid through their Amazon store using some bitcoins I had laying around and used the bitspend service to complete the purchase. I got the case, it was legit (with serial # that verifies) and everything seemed fine.
A couple weeks back I noticed my Neo had cracked around the usb port so I took a pic (large image http://pcsites.com/DSCN5201.JPG ) and hit up Spigen on Facebook to see what they had to say. Their rep told me to contact support and that they would send me a reinforced unit (so yes obviously based on this and the number of similar complaints they redesigned the ring on they Neo Hybrid blury pic showing the new ring http://pcsites.com/updated.jpg next to the old silver ring ). So I dropped support a ticket with my product and serial. They got back to me a couple days later. Their response was basically "whats your order #?" If you didnt order our product directly from us, contact who you ordered it from because we cant help you. I responded back and explained to them how I had procured my Neo, including a screen shot of the order confirmation from bitspend. They contacted me back and told me that that had taken my order # from the screen shot and an Amazon rep would be in touch with me. I contacted them back and explained again that I was just the person receiving the item from Amazon so if they told amazon to look it up by order # and contact the person whose order number it was then I wouldn't be hearing from Amazon. I did wait a few days though. Then basically I gave up, responded back and told them I would buy another product.
So just FYI. Just because they brag about a warranty, and they have 'serial' numbers to prove authenticity, don't expect them to stand behind their product necessarily. The tl;dr version of my ticket can be seen here ( http://pcsites.com/spigen2.jpg )
BTW the blue ring in the photo is one I bought when I got tired of waiting for Spigen to be a stand up company to stand behind their product and handle the replacement regardless of whom the item was purchased from. I doubt I will ever purchase from them again considering this service.