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<label for="tab1">Overview</label>
<label for="tab2">Participating Offices</label>
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<p>The WIPO Digital Access Service (“DAS”), available at <a href="https://www.wipo.int/das/en/">https://www.wipo.int/das/en/</a>, allows you to meet requirements for providing priority and similar documents in respect of participating Offices, without the need to obtain and send multiple certified paper copies of an application.</p>
<p>Instead, you ask the Office where you are claiming priority (“Office of Second Filing” or OSF) to download a copy of the document directly from a digital library, normally held by or on behalf of the Office where the earlier application was filed from which priority is claimed (“Office of First Filing” or OFF).</p>
<p>DAS provides a secure, trusted mechanism which allows Offices both to transmit and to access unpublished documents with confidence that the transmission has been permitted by the applicant or other authorized person.</p>
<p>It is essential that users properly understand what is required to give permission for this transfer. Because the system is designed to work between pairs of Offices, which may have no other working relationship, there are steps involved, which are different from, or additional to those in other priority document exchange systems in operation between certain Offices.</p>
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<p>An up-to-date list of participating Offices is maintained on the WIPO DAS website at: <a href="https://www.wipo.int/das/en/news">https://www.wipo.int/das/en/news</a></p>
<p>As of November 1, 2025, there are 50 IP Offices participating in WIPO DAS. Other Offices are at various stages of preparation to join the system and are expected to join in the future.</p>
<p>The participating Office’s websites also provide useful DAS information relevant to that particular Office, please see New Office Participation.</p>
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<p>The service is intended for use with documents related to patents, utility models, industrial designs and trademarks.</p>
<p>At present, the service is operational for exchange of patent, utility model and design priority documents.</p>
<p>The scope of documents which can be made available also depends on the policy of the Office of First Filing.</p>
<p>Some Offices will allow any patent application filed at their Office to be entered into the system; other Offices offer the service only for a limited range of applications, such as those which have been filed in electronic form.</p>
<p>The relevant scope for each participating Office is outlined in each Office's notification on WIPO’s Digital Access Service (DAS) website at: <a href="https://www.wipo.int/das/en/participating_offices.html">https://www.wipo.int/das/en/participating_offices.html</a></p>
<p>The service will be extended to trademarks, once the participating Offices have made the necessary operational and technical changes.</p>
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