Is File History Estoppel Coming to Canada?
The use of patent prosecution history is a standard part of analysing patents in the United States but the courts in Canada have resisted using the prosecution history for parsing the words of patent claims. A recent decision highlights a situation where the use of the patent prosecution history would have resulted in a different analysis in Canada and the trial judge asks whether it is time to consider the prosecution history and imposing consequences on parties that argue differently at court than before the patent office.
During the patent filing process, the applicant, through their patent agent, often makes . . . [more]
