Legal analysis: The main measures that can be taken if you are dissatisfied with the handwriting appraisal conclusion are:

1. Insist on applying for re-authentication. If you are dissatisfied with the identification conclusion and want to overturn it because it is wrong, you must insist on applying for re-identification. Then obtaining the judge's support for re-identification is the primary purpose. The parties concerned cannot simply make an application, but must prepare sufficient and reasonable reasons for the re-appraisal application, collect as much evidence as possible, and do their best. For example, raising well-founded, legal and reasonable objections to the appraisal conclusion, including the appraisal procedures and appraisal results, etc.

2. Complain to the judicial administrative agency to achieve the purpose of revoking the illegal judicial appraisal conclusion. If a forensic identification institution conducts forensic identification activities illegally, it can file a complaint with the provincial judicial administration department. The judicial administrative department can investigate and deal with its illegal activities so as to invalidate the original identification conclusion or the judicial identification organization can actively revoke the illegal identification conclusion.

3. Actively collect other evidence to overturn the appraisal conclusion, so that the appraisal conclusion cannot be used as final evidence. Careful parties will find that there will be a "statement" on the first page of a formal judicial appraisal opinion. The content often includes words such as the client should provide true, complete and sufficient identification materials to the identification agency, and be responsible for the authenticity and legality of the identification materials. The implication is that the appraisal opinion is based on the authenticity, completeness, adequacy, and legality of the inspection materials. If we can collect evidence that denies the authenticity, completeness, sufficiency, and legality of the examination materials, the appraisal opinion will lose its foundation and naturally cannot be used as final evidence.

Legal basis: "Civil Procedure Law of the People's Republic of China"

Article 77 The appraiser has the right to know the case materials needed for the appraisal and may inquire when necessary Parties and witnesses. The appraiser shall submit a written appraisal opinion and sign or seal the appraisal document.

Article 78 If the parties have objections to the appraisal opinion or the people's court deems it necessary for the appraiser to appear in court, the appraiser shall appear in court to testify. If, upon notice from the People's Court, the appraiser refuses to appear in court to testify, the appraisal opinion shall not be used as the basis for determining the facts; the party who paid the appraisal fee may request the refund of the appraisal fee.