What is the minimum notice period a patent practitioner must give to withdraw from a case?

The correct answer is based on the requirement set forth in the rules governing patent practitioners when they intend to withdraw from representing a client in a particular patent case. According to the relevant regulations, a patent practitioner must provide at least 30 days' notice if they plan to withdraw. This notice period is specifically aligned with the time remaining in the maximum period allowed for response to an office action or similar requirement.

This provision ensures that clients are given sufficient time to seek alternative representation or to address any pending matters before the practitioner officially withdraws. It is crucial for maintaining continuity in legal representation and ensuring that clients are not left without counsel during critical stages of their patent prosecution process.

The other options either misunderstand the required timeframe or misinterpret conditions that don't relate to the withdrawal process. Understanding the notice period requirement is essential for patent practitioners to comply with ethical obligations and procedural rules when managing their client relationships.