Meaning
Procedural rules within the international patent system define the mechanism by which an applicant may voluntarily terminate an application before it enters the national phase. Under pct rule 90bis, the applicant can withdraw the entire international application or specific designations before the expiration of thirty months. This action stops the processing of the case at the international bureau.
It allows for a strategic exit if the prior art search results are unfavorable.
Withdrawal Procedure
Formal notice must be submitted in writing to the receiving office or the international bureau to effect a cancellation. The pct rule 90bis provision requires the signature of all applicants or an authorized agent with a specific power of attorney. This requirement prevents the unauthorized loss of patent rights through accidental or malicious filings.
Timing Constraint
Withdrawal must happen within a narrow window to achieve the desired effect on the patent prosecution. If the pct rule 90bis request arrives too late, the application will proceed to publication.
Publication Bar
Withdrawal of an application must be received by the international bureau before the technical preparations for publication are finished. The pct rule 90bis request ensures that the confidential details of the invention are not released to the public domain, allowing the applicant to refile at a later date without the burden of prior disclosure. Any later attempt to retract the application will not prevent the disclosure of the patent specification.