ICANN requires Registrars to notify applicants, in the first 90 days after the Sunrise Period for any new gTLD, if the name they're trying to register has a pre-existing Claim in the Trademark Clearinghouse. A Registrar must obtain the relevant claim information from the Registry and the TMCH and display a notice to the applicant, real-time, upon check availability.
This requirement is limited to the new gTLD domain names only. No ccTLDs or other extensions being launched are affected by this.
Implemenation
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During the check availability of a domain name in the claims period, if the name matches a label registered in the Trademark Clearinghouse, the Registry will provide a lookup key to the Trademark Clearinghouse database. The system will obtain the lookup key and return it as a Token. - 
On the Supersite, existence of a Trademark Claim will be indicated while adding the domain name to the shopping cart. 
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API users will receive the Claim status and Token as additional response parameters with the domain name check availability call. Additional Information
 
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Display of Claim Notice: - 
While adding the domain name to the shopping cart, the SuperSite will display a Claim Notice with the Trademark Claim as obtained from the Trademark Clearinghouse database. 
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API users will pass a separate call to obtain the Claim Data. Additional Information
 
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The Claim Notice will explain to the applicant the significance of the Claim, and will require the applicant to agree that his / her / their registration of the domain name does not infringe on the Trademark rights listed in the notice. 
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If the applicant does continue with the registration, appropriate confirmation needs to be sent to the Registry. - 
The SuperSite will handle sending of the confirmation to the Registry. 
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API users will pass this extra information through the Domain Name Register API call. Additional Information
 
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