Supplemental discovery responses in California refer to the additional or amended responses provided by a party to their opponent's discovery requests after the initial responses have been submitted. These supplemental responses are typically necessary when new information becomes available or when the party realizes that their initial responses were incomplete or incorrect. Keywords: Supplemental discovery responses, California, withdraw, amended responses, additional responses, discovery requests, new information, initial responses. Different types of supplemental discovery responses in California include: 1. Supplemental Interrogatory Responses: These are additional answers or amended responses to written questions posed by one party to the other. They may be required when new information comes to light or when the initial response was incomplete or incorrect. 2. Supplemental Document Production Responses: These pertain to the additional documents or amended listings provided by a party in response to requests for document production. If a party discovers additional relevant documents after the initial response, they are obligated to supplement their production accordingly. 3. Supplemental Request for Admission Responses: Parties may amend or supplement their initial responses to requests for admission if they realize that their previous answers were incorrect or if new information becomes available. 4. Supplemental Deposition Responses: These are additional or corrected answers given by a deponent during a deposition. If a witness or a party becomes aware of any errors or omissions in their initial deposition testimony, they can supplement it by providing the correct or updated information. 5. Supplemental Expert Witness Responses: If a party's expert witness provides new or corrected information after submitting their initial expert report, they may be required to provide supplemental expert witness responses. Withdrawal of supplemental discovery responses in California is generally allowed if there is a valid reason for doing so. For example, if a party realizes that their supplemental response was incorrect, incomplete, or made in error, they can seek permission to withdraw it. The court will consider factors like timing, prejudice to the opposing party, and the reasons provided for the withdrawal before granting or denying such requests. Overall, supplemental discovery responses in California allow parties to provide additional or amended information, ensuring fairness, and accuracy in the discovery process.