An affidavit of merit is a requirement in some jurisdictions, primarily in medical malpractice claims, to have an expert file an affidavit stating the claim has merit. It is a measure enacted to deter frivolous lawsuits. When a plaintiff in a medical liability lawsuit does not file an affidavit of merit with the complaint, the case may be dismissed. Below is a detailed explanation of Affidavit of Merit for State of Texas