Under the CISG (Convention on Contracts for the International Sale of Good)

Under the CISG (Convention on Contracts for the International Sale of Good), what is the basic rule for who bears the risk of loss?
b) What are INCOTERMS?
c) Explain very generally when risk passes from buyer to seller according to the four INCOTERMS groupings (E, F, C and D).
2) You learned about intellectual property and the international protection of patents. What are the benefits of filing under the PCT (Patent Cooperation Treaty) as opposed to filing nationally, such as with the USPTO (US Patent and Trademark Office)? (note: If you were not in class, you may find this answer through independent online research)