[flaptrap]

First you look at the MIT license (https://opensource.org/license/mit/): "Copyright <YEAR> <COPYRIGHT HOLDER>

"The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software."

Assuming the full license (I omitted about 892 characters) were in the original the derivative work omitting the original notice violates the license. In USA, you register your copyrighted work and can sue for statutory damages.

Patent protects an original idea (reduced to practice) and one precept is that the idea got independently used only after it was disclosed to the public. Obtaining a patent from the PTO is not a trivial matter and then you can sue for your lost profits, damages based on the defendant's profits, or prohibit use by anyone. All of this assumes you really care.

[corn-dog]

As I said in my large comment, there is no violation, because the work is my own. And this person has nothing. But some other fancy words come to mine such as slander, libel, and defamation.

I’ve shared all my source code