Product review (2 stars): Doesn't matter if genuine, its a poor filter anyway
I have bought this filter from Amazon, and also directly from Samsung.  Both are poor.  My Samsung French-door refrigerator makes a knocking noise sometimes when pouring water, and the cause is connected to the filters.  Take the filter out, or even take it out and immediately put it back in, and the knocking goes away for a while.  Change the filter to a new one and the knocking goes away for a few weeks.  Not good.

In addition, the filters are very difficult to remove and install.  The water filter assembly is in the lower right corner of Samsung French doors, and you have to press in and twist at the same time to remove or install.  Usually both ways, and always in installing, it takes more strength than anyone in my family has.  So we use a 90% wrench.  Poor design, and like many other water filters of many other refrigerator brands it spills a half cup of water on your floor in the process.