Patent Law in different countries
There are so many differences and things that distinguish Patent Law in different countries. In the United States the patent system considers a case of patent infringement when it is found that even a making or slightest adjustment is made to an existing invention. The Australian Patent Law permits others to build on top of an existing patented invention. The English patent is less regarded as a privilege and had no roots in the common law in earlier days. But modern day patent law here is very similar to that of the European Union. Software-related inventions are patentable in Japan. In India the software patents was quashed in 2005.