Wisconsin Statutes Regulation and Licensing (Ch. 440 to 480) § 443.17. Seal or stamp; aiding unauthorized practice

(1) No person who is registered under this chapter to practice architecture, landscape architecture or professional engineering may impress his or her seal or stamp upon documents which have not been prepared by the person or under his or her direction and control, knowingly permit his or her seal or stamp to be used by any other person or in any other manner knowingly aid or abet the unauthorized practice of architecture or professional engineering or the unauthorized use of the title “landscape architect” by persons not authorized under this chapter.

(3) A Wisconsin registered interior designer who is responsible for preparing an interior technical submission for delivery to any person or for a public record shall date, sign, and impress his or her seal or stamp upon the interior technical submission and any other related documents prepared by the Wisconsin registered interior designer.

(4) No Wisconsin registered interior designer may impress his or her seal or stamp upon a document that has not been prepared by the Wisconsin registered interior designer or knowingly permit his or her seal or stamp to be used by any other person.