The distinction between software expression protected by copyright law and software functionality not protected by copyright law is often elusive. Accordingly, we analyze what the U.S. Supreme Court’s Decision in a program copyright lawsuit between Google and Oracle suggests about the direction of copyright protection for the latest software. Next, we will try to find an appropriate balance between the scope of protection of patent and copyright for software. To this end, we look at ways to increase the expertise of judges to clearly determine the boundaries of the protection scope of patents and copyrights for software. Nevertheless, as for software, overlapping protection of patent and copyrights may inevitably occur. For this, we look at ways to resolve the inconsistency between the protection period of patent and copyrights. Lastly, we will look at the special law for areas not protected by patent and copyright laws.