Katherine M Koppenhaver

Katherine M. Koppenhaver is a Certified Questioned Document Examiner. Her firm, Forensic Document Examiners has been providing services related to questioned documents for over 40 years. Our staff enables us to handle large cases and to provide a quick turn-around on all our cases. Katherine has examined over 3800 cases and has an international clientele. Katherine has testified in court and deposition over 600 times in the US, Trinidad, Jamaica, Sweden, and the Philippines. Katherine teaches a weekly class open to all document examiners regarding all aspects of document examination. She has over 100 examiners who are members of her classes.