John F. Duffy thinks so:
The Patent and Trademark Office has now made clear that its newly developed position on patentable subject matter will invalidate many and perhaps most software patents, including pioneering patent claims to such innovators as Google, Inc. . . .
The apparent death of Google’s pioneering PageRank patent under the PTO’s new rule for patentable subject matter may be a cause for celebration among those who are philosophically opposed to property rights in innovation and are eager to confine the patent system’s ambit. It will surely be cause for mourning among those who believe that allowing patents on cutting edge technologies has served the country well for more than two centuries and that a radical departure from the traditional approach would be unwise.