New ask Hacker News story: Ask HN: Is it a coincidence someone patented my MVP?

Ask HN: Is it a coincidence someone patented my MVP?
3 by athrowaway1 | 4 comments on Hacker News.
Throwaway. I publicly posted my MVP on a tech forum, and a few days later a tech company filed a patent for the same thing. I'm assuming it's a coincidence, and that we were both working on the same thing at the same time. Had anyone experienced this before? And is it feasible someone could pull together and submit a patent in less than a week?