You can object to questions that invade the attorney client privilege
(discussions between you and another attorney); information regarding your financial information (bank accounts, tax returns, etc.); or information that may otherwise be privileged (usually will not be applicable, but you can check the evidence code.
Unfortunately, in discovery you usually end up "showing all your cards" - the purpose of discovery is for each side to be allowed to ask for information and for all of the facts to be displayed early in the case. This is why you should also send out your own discovery to learn what information they may have to offer.
If you need to draft an ex-parte application, it is a motion drafted on pleading paper (just like the discovery papers) but in the case of a request for extension will be short (explains that you need an extension, why, and that you have asked for the extension from the other side but they refused to give it to you, you will then attach a short declaration (also on pleading paper) telling the Court the facts to support your motion). This will be given to the other side at least 24 hours in advance, and then you will appear in the proper department (check with the Court Clerk) at the time of the hearing and make your motion (you need to check early so that you can tell the other side which department and what time you will be appearing).
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The way Just Answer works is that both the service (and each of us experts) are paid based on each answer. We try to keep each question separate, while we are happy to answer follow ups to the original question, if you have questions regarding separate or different issues in your litigation
you will need to post them as new questions through Just Answer (the same as you did this one).
If you would like to direct the question to me, you can begin your question by typing "For CalAttorney2 Only ..." and this will alert me to the question and I can follow up directly (there may be a brief delay but I will respond to your question.
I am truly happy to be of assistance (this is my primary goal in answering these questions), and I hope that your matter goes well. If you have any further follow up questions please let me know.
I will of course be happy to answer any future questions as well.