Home / API reference / API documentation (JSON/XML) / Tasks Tmch tasks API reference (XML/JSON) · Updated 2023-09-18 Pages in this section Tmch claims list The TmchClaimsList task inquires TMCH Claims Notices. Tmch labels prereg list The TmchLabelsPreregList task inquires the Tmch mark labels for which domain preregistration is possible. Tmch mark list The TmchMarkList task generates a list of registered TMCH trademarks.