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Jan 5, 2017 at 20:25 comment added DukeZhou @EricShain Thanks for bringing up that important point. Priority date was definitely a component of the aforementioned advice. The other point regarding "blanket protection" was more about flexibility in terms of deciding what to claim on the actual patent. (i.e. what I ended up claiming was quite different than what I expected, but the provisional was broad enough that the ultimate claims were encompassed.)
Jan 5, 2017 at 20:10 comment added Eric S A provisional application doesn't really provide protection in that it isn't a patent. It does establish a priority date in case you pursue an actual patent and have competition from another patent application.
Nov 30, 2016 at 17:08 history answered DukeZhou CC BY-SA 3.0