The one in Port87 is the only patent I have, and it is not copyleft. I have tons of open source code that I could have patented, including in Nymph, but didn’t. Now that prior art exists and is in the market, those things can’t be patented.

There’s very little reason to seek a patent except to offer the product for sale in the market. It’s wildly time consuming and expensive. Mine cost me about $17k and took me three years to get. And I’m not a big company with mountains of cash and lawyers on the payroll. I patented it so that Microsoft, Google, etc. couldn’t just see my idea and be like, “that’s good, let’s take it”. That would kill my business. Copylefting the patent would allow them to do that.