When "confronted" outside of a grocery store and asked "The iPad, was that really invented by you guys, 'cause you guys used a thing called the PADD," Spiner replied, "Well, we invented everything."
In all seriousness, a number of future gadgets seem to have been inspired by "Star Trek" technology. For example, the flip phone is very similar to the communicator from "Star Trek: The Original Series," and Bluetooth headsets are reminiscent to Uhura's communications earpiece, also from "Star Trek: TOS."
As Spiner said, "Of course, we did the Bluetooth; you remember Uhura with the Bluetooth; Captain Kirk had the flip phone; Captain Picard had a PADD in his office; we're soon going to be able to make ourselves transport from one place to another; matter-of-fact, I wish I could do that, right now (to get away from the paparazzi, we assume)."
The PADD was a Personal Access Display Device, which in the light of day seems reminiscent of today's iPad and other tablets. While Samsung didn't cite Star Trek in its recent patent row against Apple, but perhaps it should have. It did, however, try to use Kubrick's "2001" as prior art in the case, but was rebuked by Judge Lucy Koh.