You can file a motion for determination for factual innocence. I would suggest hiring an attorney since you did not provide any specifics related to your case. Here is the relevant code section.
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I agree with Mr. Yarbrough. In addition, there is nothing within the statute that states you can only bring the petition once. However, there is a time limit on bringing the petition within two years from the date of the arrest unless you can show good cause as to the delay. Some courts are more strict than others regarding what constitutes good cause. For example, the County of San Francisco requires more than just ignorance of the law.
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