Just spoke to the US patent and trademark office. Trademarks can be cancelled after they have been registered. CS registered the trademark in 2008 and recertified it in 2014. They claimed that they were using it and were the only knifemakers using it since 1986 (its on their direct filing) and are therefore entitled to trademark protection. The grounds to cancel their trademark is as follows (link to the USPTO will follow):
"A cancellation proceeding is a proceeding in which the plaintiff seeks to cancel an existing registration of a trademark on the Principal or the Supplemental Register. "Any person who believes that he would be damaged by the registration of a mark" may, upon payment of the prescribed fee, file a petition to cancel thereto, but the petition to cancel may only be filed after the issuance of the registration. [ Note 2.]"
note 2. See Trademark Act § 14 and Trademark Act § 24, 15 U.S.C. § 1064 and 15 U.S.C. § 1092.
Section 300
https://mpep.uspto.gov/RDMS/TBMP/current#/current/TBMP-300d1e1.html
37 CFR § 2.111(a) A cancellation proceeding is commenced by filing in the Office a timely petition for cancellation with the required fee. The petition must include proof of service on the owner of record for the registration, or the owners domestic representative of record, at the correspondence address of record in the Office, as detailed in §§ 2.111(b) and 2.119.
37 CFR § 2.116(b) The opposer in an opposition proceeding or the petitioner in a cancellation proceeding shall be in the position of plaintiff, and the applicant in an opposition proceeding or the respondent in a cancellation proceeding shall be in the position of defendant. A party that is a junior party in an interference proceeding or in a concurrent use registration proceeding shall be in the position of plaintiff against every party that is senior, and the party that is a senior party in an interference proceeding or in a concurrent use registration proceeding shall be a defendant against every party that is junior.
37 CFR § 2.116(c) The opposition or the petition for cancellation and the answer correspond to the complaint and answer in a court proceeding.
An opposition proceeding is commenced by the timely filing of a notice of opposition, together with the required fee, in the USPTO. [ Note 1.] The notice of opposition must include proof of service on the owner of the application, or its attorney or domestic representative of record, at the correspondence address of record in the Office. [ Note 2.] See TBMP § 309.02(c). If any service copy of the opposition is returned to the opposer as undeliverable, the opposer must notify the Board within ten days of receipt of the returned copy. [ Note 3.] See TBMP § 309.02(c)(1).
Similarly, a cancellation proceeding is commenced by the timely filing of a petition for cancellation, together with the required fee, in the USPTO. [ Note 4.] The petition to cancel must include proof of service on the record owner of the registration, or its domestic representative. See TBMP § 309.02(c)(2). If any service copy of the petition to cancel is returned to the petitioner as undeliverable, the petitioner must notify the Board within ten days of receipt of the returned copy. [ Note 5.] See TBMP § 309.02(c)(2).
The notice of opposition, or the petition for cancellation, and the answer thereto correspond to the complaint and answer in a court proceeding. [ Note 6.] The opposer in an opposition proceeding, or the petitioner in a cancellation proceeding, is in the position of plaintiff, and the applicant in an opposition proceeding, or the respondent in a cancellation proceeding, is in the position of defendant. [ Note 7.]
An interference proceeding commences when the Board mails a notice of interference to each of the parties to the proceeding, as described in 37 CFR § 2.93. For further information concerning interference proceedings, see TBMP Chapter 1000.
A concurrent use proceeding commences when the Board mails a notice of the proceeding to each of the parties thereto, as described in 37 CFR § 2.99(c) and 37 CFR § 2.99(d)(1). For further information concerning concurrent use proceedings, see TBMP Chapter 1100.
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What all this means is that anyone who wants to petition for cancellation of he trademark because "he feels he may be damaged by the trademark" must pay $300 and file a written opposition to the trademark and send proof that you sent a copy to the attorney of record for CS. Multiple people can join the motion for cancellation and each must pay the $300, but only one letter of explanation needs to be submitted. Or everyone can submit their own letter.
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