19世纪末美国的专利战争导致专利保护一落千丈。但从20世纪80年代起,美国的专利战争再次日趋兴旺,而目前每年颁发的专利权数量几乎是10年前的两倍。随着专利保护范围的不断扩大,一些荒唐可笑的专利权随之产生。 Patent warfare plummeted in the United States in the late 19th century. Since the 1980s, however, the U.S. patent war has once again thrived. At present, the number of patent rights granted is almost twice that of a decade ago. With the continuous expansion of the scope of patent protection, some ridiculous patent rights ensue.