Not so long ago, a certain fruitily named computer manufacturer decided to distribute music, and were sued by an older, and similarly fruitily named record company for not only violating their trademarks, but violating a specific agreement not to encroach on the record company's turf.

The fruitily named computer company won the case on the grounds that they were only selling, and not producing music.

Surely the same thing applies here - Bonobo's Unretina only modifies images, it does not provide hardware on which to display them.