Apple put in a patent for it but it doesn't mean it will ever come to anything. They file 1000's of patents that will never actually amount to anything.
I read somewhere that some standards agentcies have agreed that Stereoscopic will remain the main standard for 5 years or so, so that people who buy a TV now wont have it obsolete within a year. I don't know how far into that timescale we are or even if it's a true timescale but yeah, you would be safe for the time being.