PCT Receiving Office Guidelines
Chapter XIX: Miscellaneous
Expressions Not to Be Used (Rule 9)
333. If the receiving Office notes that the international application contains expressions, drawings or statements not to be used as defined in Rule 9.1, such as statements disparaging the products or processes of any particular person other than the applicant, or the merits or validity of applications or patents of any such person, it may proceed in accordance with Rule 9.2. Form PCT/RO/112 is used for that purpose, copies being sent to the International Bureau and to the International Searching Authority.