I'm not sure if you're (just) playing devil's advocate, but the blog post[0] linked in the article covers quite a lot of instances of prior art[a] / multiple di

I'm not sure if you're (just) playing devil's advocate, but the blog post[0] linked in the article covers quite a lot of instances of prior art[a] / multiple discovery / coincidences, going back years before the patent application was filed. Whether this is proof that the design was copied -- I can't say. [0] https://torbjornludvigsen.com/blog/hangprinter-is-prior-art/ https://torbjornludvigsen.com/blog/hangprinter-is-prior-art/ [a] what I would call "prior art", anyway. IMHO, IANAL (AFAIK)