Hi @AboalhasanIf you think that the material that you are using might be infringing upon somebody else's idea or content, we would suggest not including it in your course. The easiest way to check whether it is ok for you to use somebody else's content in your course is to contact them directly and ask for their permission.
Ultimately, Udemy cannot advise on any copyright issue and takes no responsibility for the material that you place on our platform. Remember that you retain the rights to all of the content that you place on Udemy and that we are simply the platform through which you deliver that material.
If you have any other questions, please feel free to reach out firstname.lastname@example.org.