What is a patent opposition?
A patent opposition is a formal procedure allowing third parties to challenge the grant of a patent application before a patent office. Here's a concise and complete explanation: Purpose : It provides a mechanism for interested parties to raise objections to the grant of a patent on specific grounds, typically related to the patent's validity or patentability criteria. Timing : In some jurisdictions like Europe and India, opposition can be filed after the patent application has been published but before the patent is granted. In other jurisdictions such as the U.S., challenges can occur both before and after grant through different procedures. Procedure : Opponents submit a formal document outlining the grounds for opposition, such as lack of novelty, inventive step, or industrial applicability. The patent office notifies the patent holder, who may respond with counterarguments and evidence. Both parties may participate in hearings or provide additional evidence as required by ...