What is the ruling on participating in language courses that display scenes from films that are not immoral but are protected by intellectual property rights, and which are played without regard for these rights?

What was mentioned, that some course organizers display copied scenes without observing intellectual property rights, does not prevent participation in the courses and benefiting from them. This is because the participant does not truly know about the transgression of rights, and the default is safety, and "the unknown is like the non-existent" as Ibn Taymiyyah said. And assuming a transgression occurred, its sin is upon the doer. If the participant becomes aware of that, then he must advise the course organizers by clarifying the impermissibility of violating those rights, and that does not prevent him from benefiting from the course.