> If Perplexity’s source code is downloaded from a public web site or other repository, and you take the time to understand the code and produce your own novel implementation, then yes.
Even that can be considered infringement and get you taken to court. It's one of the reasons reading leaked code is considered bad and you hear terms like cleanroom[0] when discussing reproductions of products.
It certainly can be, but it's not guaranteed. Clean room design is one way to avoid a legally ambiguous situation. It's not a hard requirement to avoid infringement. For example, the US Supreme Court ruled that Google's use of the Java APIs fell under fair use.
My point is: just because certain source material was used in the making of another work does not guarantee that it's infringing on the rights of that original IP.
Even that can be considered infringement and get you taken to court. It's one of the reasons reading leaked code is considered bad and you hear terms like cleanroom[0] when discussing reproductions of products.
[0]: https://en.wikipedia.org/wiki/Clean_room_design