Perspective
Jun. 15, 2013
Law still fuzzy on patentability of business methods
CLS Bank calls into question the validity of the bulk of the business method patents issued during the State Street era, many of which are presently the subject of hotly contested litigation. By David B. Sandelands
In CLS Bank v. Alice Corp, No. 2011-1301, the Federal Circuit brought a degree of clarity to the question of when, if ever, methods of doing business are patent eligible subject matter. In order to appreciate the import of CLS Bank, it is useful to review the history of business method patents.
In 1998, the Court of Appeals for the Federal Circuit issued its then-landmark State Street Bank v. Signature Financial G...
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