What are the primary goals of copyright law (be specific & detailed)?

What are the primary goals of copyright law (be specific & detailed)?-What are the benefits of copyright registration with the U.S. Copyright Office?-Once we have registered our copyright, what is the duration of the copyright, what if it is a copyright for a work made for hire? What happens to the copyright after expiration?-What is the meaning of transformative use and how does it affect copyrights?-What is the Digital Millennium Copyright Act and why is the safe harbor provision so important?-What is the definition of a trademark and what is the likelihood-of-confusion test?-What is the purpose of the Anticybersquatting Consumer Protection Act of 1999?-Describe the requirements for patentability and what is considered non-obvious. Each question should be answered with a full discussion and analysis with proper cyber law terminology.