SlateStarCodex sums it up:

You might already be following the Navy UFO thing: over the past few years, the Navy has encouraged its pilots to come forward with UFO accounts, signal-boosted the reports, and sponsored UFO research organizations, as if they’re trying to stoke interest for some reason. Now the plot gets weirder: a Navy scientist has filed a patent for a quantum superconducter antigravity drive capable of UFO-like feats of impossible aeronautics. When the Patent Office rejected it as outlandish, the Chief Technical Officer of naval aviation personally wrote the Patent Office saying it was totally possible and a matter of national security, after which the Patent Office relented and granted the patent. The patent thanks UFO researchers in the acknowledgements, includes a picture of a UFO recently sighted by Navy pilots, and does everything short of print in capital letters ‘THIS COMES FROM A UFO’. Scientists who were asked to comment say the proposed drive is “babble” and none of the supposed science checks out at all. Has the Navy fallen victim to conspiracy-peddlers, are they deliberately trying to stoke conspiracy theories for some reason, or what?