Creating Pomodoro Clock project for front-end specialization might be illegal

So one of the projects for front-end specialization is Pomodoro Clock. Pomodoro method has Intellectual Property registered to Francesco Cirillo’s company Cirillo Consulting GmbH. According to their website you must get a permission from them if you want to create an app that uses their idea, context etc.

No software application (desktop, server, mobile app) nor hardware product (mechanical or digital timer) can be created using the context/idea/reports of the Pomodoro Technique without specific authorization.

source: https://francescocirillo.com/pages/pomodoro-trademark-guidelines

What do you guys think about it?

Do a search for Educational Exemption
even if the educational exemption does not
apply to you circumstances it can certainly
be cited as a defense.