Q: How do i find out if someone has a patent on an idea
I worked for a company that had many non-disclosure agreements
A: Hi. Good question. You have to do a prior art search. Not an easy thing to do, often containing two levels. First is a outsourced company doing the prior art search. Second, a patent attorney analyzing and providing opinions on the prior art.
Marcos Garciaacosta agrees with this answer
You can start with public searches, in google patent or PAIR.
You can then get an attorney to do a prior art search as advised already.
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