Code of Professional Responsibility and Accountability (CPRA)
Section 13. Imputation of a misconduct, impropriety, or crime without basis. - A lawyer shall not, directly or indirectly, impute to or accuse another lawyer of a misconduct, impropriety, or a crime in the absence of factual or legal basis. Neither shall a lawyer, directly or indirectly, file or cause to be filed, or assist in the filing of frivolous or baseless administrative, civil, or criminal complaints against another lawyer.