You don't have to read the newspapers to discover that the world can be pretty chaotic. However, international intellectual property has been fairly uniform and consistent. Sure, many nations will have their own idiosyncrasies as to how they will approach copyright, patent and trademark issues. The fact remains that most countries had striven for uniform administration and protection of patents ever since the late 19th Century and the Paris Convention for the Protection of Industrial Property of 1883. National, international and regional organizations exist to further the purposes of intellectual property law. These are valuable sources of information for various tasks related to international intellectual property legal research.
Here is a sampling of IP offices throughough the world. A more definitive list can be found at WIPO's Directory of Intellectual Property Offices listed below.