Nikon Inc. has announced it's suing Sakar International Inc. over the design of the Polaroid iM1836, a planned Android camera that does look remarkably like the Nikon 1 series of mirrorless cameras. Announced this morning in a Japanese language press release on Nikon's Japanese website, the lawsuit was filed in the US District Court for the Southern District of New York. The lawsuit seeks an injunction against both manufacture and sale of the Polaroid iM1836 digital camera.

Nikon notes in the press release that they tried to resolve the matter with Sakar, but did not come to a satisfactory conclusion (paraphrase). 

In our report from CES 2013, where Sakar announced the Polaroid iM1836, we noted more than once that the design reminded us of the Nikon 1 J-model cameras. We also noted how different the Polaroid design was in practical terms, with an Android operating system, a touchscreen, and interchangeable lenses that integrated a shutter and sensor. The camera was then expected to ship in the first quarter of 2013 for $399. 

The design in question is the Polaroid iM1836, an interchangeable lens camera with Android as its operating system. More unique is that each lens module has its own sensor and shutter mechanism.