Intellectual property

What are some of the reasons that intellectual property requires different legal protections than tangible or real property?

How are valid and enforceable contracts important to the creation and protection of intellectual property?
What might some of these contracts include?

Give a brief feedback on the video.

https://www.uspto.gov/video/cbt/ptrcsearching/
Consider the following as you watch:
•How do you determine whether you have a patentable invention?