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Revised Report of the Independent Review of the Trademark Clearinghouse Now Available

LOS ANGELES – 23 February 2017 – The Internet Corporation for Assigned Names and Numbers (ICANN) today published the Revised Report of the Independent Review of the Trademark Clearinghouse.

Read the report [PDF, 1.28 MB].

The review was conducted by Analysis Group, a third-party consulting firm. The firm examined whether domains that relate to, but do not exactly match trademarks should be considered for use in the Claims periods of a new generic top-level domain's lifecycle. The review also explores if extending the number of days of the Claims service would be of value and measures how frequently trademark holders use the Sunrise period.

A draft report was published for comment on 25 July 2016. The revised version available today incorporates suggestions received during the public comment period and provides clarifications regarding the data used (view the redlined report [PDF, 1.29 MB]). The report of public comments, which includes summary and analysis of the comments received regarding the study's findings, was published on 26 September 2016.

An independent review of the Trademark Clearinghouse was initially advised [PDF, 110 KB] by the Governmental Advisory Committee in May 2011 to be completed after the launch of the New gTLD Program. The review is informed by an analysis of Trademark Clearinghouse and third-party data sources, including data collected from stakeholders via interviews and surveys.

The revised report is expected to help inform discussions and policy development regarding Rights Protection Mechanisms in the New gTLD Program.

Learn more about the Trademark Clearinghouse Independent Review.


ICANN's mission is to help ensure a stable, secure and unified global Internet. To reach another person on the Internet, you have to type an address into your computer - a name or a number. That address has to be unique so computers know where to find each other. ICANN helps coordinate and support these unique identifiers across the world. ICANN was formed in 1998 as a not-for-profit public-benefit corporation and a community with participants from all over the world. ICANN and its community help keep the Internet secure, stable and interoperable. It also promotes competition and develops policy for the top-level of the Internet's naming system and facilitates the use of other unique Internet identifiers. For more information please visit:

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Domain Name System
Internationalized Domain Name ,IDN,"IDNs are domain names that include characters used in the local representation of languages that are not written with the twenty-six letters of the basic Latin alphabet ""a-z"". An IDN can contain Latin letters with diacritical marks, as required by many European languages, or may consist of characters from non-Latin scripts such as Arabic or Chinese. Many languages also use other types of digits than the European ""0-9"". The basic Latin alphabet together with the European-Arabic digits are, for the purpose of domain names, termed ""ASCII characters"" (ASCII = American Standard Code for Information Interchange). These are also included in the broader range of ""Unicode characters"" that provides the basis for IDNs. The ""hostname rule"" requires that all domain names of the type under consideration here are stored in the DNS using only the ASCII characters listed above, with the one further addition of the hyphen ""-"". The Unicode form of an IDN therefore requires special encoding before it is entered into the DNS. The following terminology is used when distinguishing between these forms: A domain name consists of a series of ""labels"" (separated by ""dots""). The ASCII form of an IDN label is termed an ""A-label"". All operations defined in the DNS protocol use A-labels exclusively. The Unicode form, which a user expects to be displayed, is termed a ""U-label"". The difference may be illustrated with the Hindi word for ""test"" — परीका — appearing here as a U-label would (in the Devanagari script). A special form of ""ASCII compatible encoding"" (abbreviated ACE) is applied to this to produce the corresponding A-label: xn--11b5bs1di. A domain name that only includes ASCII letters, digits, and hyphens is termed an ""LDH label"". Although the definitions of A-labels and LDH-labels overlap, a name consisting exclusively of LDH labels, such as"""" is not an IDN."