The trademarks are for "Blu-ray 3D" and two logos depicting same (one with the 3D underneath and one with it to the right). Serial numbers for the logos are 77893175 and 77893178 if you wish to confirm.
a stereoscopic motion or still picture in which the right component of a composite image usually red in color is superposed on the left component in a contrasting color to produce a three-dimensional effect when viewed through correspondingly colored filters in the form of spectacles
I don't understand the problem. Amazon.com appears to have all the current titles tagged as [Blu-ray 3D]. Since results are sorted by relevance, they're pushed to the top of a search. And you can Google for "Blu-ray 3D" including quotes. What am I missing?
That said, I already ranted about the lack of any official abbreviation in another post so I do agree there.