Your question is not clear but here is what I think is happening: You feel that your lawyer made some errors that cost you some harm/money. You discussed this with another lawyer or you did some research on your own and you learned that to pursue a legal malpractice case you need to "prove a case within a case." Here's what that means. YOur file a legal malpractice case against a lawyer claiming he/she made an error that cost you something in that underlying case. In order to win the malpractice case you need to show 1. the attorney made an error and 2. if the lawyer had not made that mistake you would have won that underlying case. You have to in a sense prove BOTH cases--prove your case against the lawyer and prove he/she would have won that other case if everything was done right.
Again, not sure what you're asking but this is my best guess.
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I presume your question is based on the notion that you want to sue your former attorney for this problem, but I cannot be sure.
Can you clarify?
In no way am I offering you legal advice, and in no way has my comment created an attorney-client relationship. You are not to rely upon my note above in any way, but insted need to sit down with counsel and share all relevant facts before receiving fully-informed legal advice. If you want to be completely sure of your rights, you must sit down with an experienced criminal defense attorney to be fully aware of your rights.
I'm not sure what the question has to do with the fact pattern you present. Addressing the facts, if you think your attorney made a mistake or you don't think s/he is representing you adequately, you need to find another attorney and discuss the mistakes so the new attorney can address them before the judge issues a final judgment of divorce.
This answer is based on the limited information provided and is not to be relied on as legal advice. You should consult an attorney before taking any action that may affect your case or potential case. Furthermore, this response does not establish an attorney-client relationship between you and this attorney. Please contact this attorney directly to retain his services or for a free consultation.
It does sound like you question is I lolling legal malpractice. You should contact a local lawyer practicing in this area. Whether you can successfully bring a claim probably will be determined by what the discrepancies are in the paperwork and whether not doing anything about them was below the standard. If they were minor it might be a judgment call, but with the damages you have described it doesn't sound minor.