You can serve your ex with a request for production of documents or serve the bank with a subpoena for your ex-'s bank records. With respect to the felony conviction, such records are public records which you can obtain directly from the clerk of the court where your ex was convicted. Since you intent to offer them as evidence, you will want to ask for certified copies.I note that to show a pattern, you will want a continuous sequence of evidence regularly occurring throughout the 20 years. Usually, a 20-year old conviction standing alone is too remote in time to be relevant. If you have competent evidence of multiple other convictions over that period of time for the same or substantially identical behavior, you may be able to persuasively argue against his lawyer's objection to your request for the documents concerning the 20-year old conviction.
Answered on Sep 12th, 2023 at 9:09 AM