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<!-- Tab labels -->
<div class="wipodas-tablabels">
<label for="tab1">What is WIPO DAS?</label>
<label for="tab2">Participating Offices</label>
<label for="tab3">Scope of Documents</label>
<label for="tab4">Unavailability</label>
<label for="tab5">Lost Codes</label>
<label for="tab6">Overview of WIPO DAS use</label>
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<!-- Panels -->
<div class="wipodas-panels">
<!-- Tab 1 -->
<div id="p1" class="wipodas-panel wipodas-acc">
<details open>
<summary>What is WIPO DAS?</summary>
<div class="acc-body">
<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>
</div>
</details>
<details open>
<summary>Security and Permissions</summary>
<div class="acc-body">
<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DAS provides a secure, trusted mechanism which allows Offices both to transmit and to access unpublished documents with confidence that the transmission has been permitted by the applicant or other authorized person.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>
</div>
</details>
</div>
<!-- Tab 1:2 Overview -->
<div id="p1p2" class="wipodas-panel wipodas-acc">
<details open>
<summary>What is WIPO DAS?<<summary>Current Participation</summary>
<div class="acc-body">
<p>The WIPO Digital Access Service (“DAS”), available at<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/</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>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>
</div>
</details>
<details open>
<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)<summary>Office-Specific Information</summary>
<div class="acc-body">
<p>The participating Office’s websites also provide useful DAS information relevant to that particular Office. Please see “New Office Participation” on the WIPO website for announcements and details.</p>
</div>
</details>
</div>
<!-- Tab 3 -->
<div id="p3" class="wipodas-panel wipodas-acc">
<details open>
<summary>Security<summary>Scope andof Permissions<Documents</summary>
<div class="acc-body">
<p>DAS<p>The providesservice ais secure,intended trustedfor mechanismuse whichwith allows Officesdocuments bothrelated to transmitpatents, andutility tomodels, accessindustrial unpublisheddesigns 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>
</div>
</details>
</div>
<!-- Tab 2: Participating Offices -->
<div id="p2" class="wipodas-panel wipodas-acc">
<details open>
<summary>Current Participation</summary>
<div class="acc-body">
and trademarks.</p>
<p>At present, the service is operational for exchange of patent, utility model and design priority documents.</p>
</div>
</details>
<details open>
<summary>OFF Policy Differences</summary>
<div class="acc-body">
<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 <p>An up-to-date list ofrelevant scope for each participating OfficesOffice is maintainedoutlined on theWIPO’s WIPO DAS website at: <a href="https://www.wipo.int/das/en/newsparticipating_offices.html">https://www.wipo.int/das/en/news<participating_offices.html</a></p>
<p>As<p>The ofservice Novemberwill 1,be 2025,extended thereto aretrademarks 50once 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 futurehave made the necessary changes.</p>
</div>
</details>
</div>
<!-- Tab 4 -->
<div id="p4" class="wipodas-panel wipodas-acc">
<details open>
<summary>Office-Specific Information< <summary>System Dependencies & Queuing</summary>
<div class="acc-body">
<p>The participating Office’s websites also provide useful DAS information relevant to that particular Office. Please see “New Office Participation” on the WIPO website for announcements and details.</p>
</div>
</details>
</div>
<!-- Tab 3: Documents -->
<div id="p3" class="wipodas-panel wipodas-acc">
<details open>
DAS system depends on the IT systems of many different Offices, over which the International Bureau has no control.</p>
<p>If a library in one Office is temporarily unavailable, requests are queued until systems are restored.</p>
<p>This may cause delays, so it is important to register the application and take the required steps as early as possible.</p>
<summary>Scope of Documents<</summary>div>
</details>
<div class="acc-body">
<details open>
<p>The service is intended<summary>Impact foron useRetrievals with documents related to patents, utility models, industrial designs and trademarks.</p>& Calendar</summary>
<div class="acc-body">
<p>In <p>Atextreme presentcases, the service is operational for exchange Office of patent,Second utilityFiling modelmay andbe designtemporarily priority documents.</p>
</div>
</details>
<details open>
unable to retrieve your application, but you should still be given an opportunity to provide a paper certified copy if needed.</p>
<summary>OFF Policy Differences</summary><p><a href="https://confluence.wipo.int/confluence/spaces/dascg/pages/1590497022/4.-+Calendar+of+network+disruptions">Network disruptions</a></p>
<div class="acc-body"></div>
</details>
<p>The</div>
scope of documents which can be made available also depends on the policy of the Office of First Filing.</p><!-- Tab 5 -->
<div id="p5" class="wipodas-panel wipodas-acc">
<details open>
<p>Some Offices will allow any patent application filed at their Office <summary>How to beRecover 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 on WIPO’s website: <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 participating Offices have made the necessary changesAccess Codes</summary>
<div class="acc-body">
<p>If you lose your DAS access code for an earlier application filed at CN, EP, FI, JP, KR, NZ or US, please contact the Office where you filed that application.</p>
<p>If the application was filed at another participating Office, contact the PCT eServices Help Desk for the access code to be resent to the e-mail address you registered for DAS purposes.</p>
</div>
</details>
</div>
<!-- Tab 4:6 Unavailability -->
<div id="p4p6" class="wipodas-panel wipodas-acc">
<details open>
<summary>System Dependencies & Queuing</summary>
<div class="acc-body">
<p>The DAS system depends on the IT systems of many different Offices, over which the International Bureau has no control.</p>
<p>If a library in one Office is temporarily unavailable, requests are queued until systems are restored.</p>
<p>This may cause delays, so it is important to register the application and take the required steps as early as possible.</p>
</div>
</details>
<details open>
<details open>
<summary>Step 1. Ensure that the document is available to DAS</summary>
<div class="acc-body">
<p>Request the Office of First Filing to deposit a copy of the earlier application to DAS.</p>
<p>The exact means of doing this will depend on the requirements of the particular Office with which the earlier application is/was filed.</p>
<summary>Impact on Retrievals<p>See & Calendar</summary>
<div class="acc-body">
<p>In extreme cases, the Office of Second Filing may be temporarily unable to retrieve your application, but you should still be given an opportunity to provide a paper certified copy if needed.</p>
<p><athe DAS home page at <a href="https://www.wipo.int/das/en/">https://www.wipo.int/das/en/</a> and the <a href="https://www.wipo.int/pct/en/appguide/index.jsp">PCT Applicant’s Guide, Annex B</a> for the procedure to be followed at each DAS depositing Office, or contact that Office directly.</p>
<p>Links to detailed instructions provided by each Office can be found on the DAS website at: <a href="https://confluencewww.wipo.int/confluencedas/spaces/dascg/pages/1590497022/4.-+Calendar+of+network+disruptions">Network disruptions</a></p>
en/participating_offices.html">Participating Offices</a>.</p>
</div>
</details>
</div>
<!-- Tab 5: Lost Codes --><p>To make an earlier PCT application filed at WIPO’s receiving Office RO/IB available to DAS, refer to a separate User Guide <a href="https://www.wipo.int/das/en/documentation.html">“PCT and DAS”</a>.</p>
<div id="p5" class="wipodas-panel wipodas-acc">
<p>Following your request <detailsto open>
the Office, you will either receive an access <summary>Howcode, toor Recoverelse Access Codes</summary>
<div class="acc-body">
<p>If you lose your DAS access code for an earlier application filed at CN, EP, FI, JP, KR, NZ or US, please contact the Office where you filed that application.</p>a code which was given to you as part of the application process (for example, in the case of a USPTO application, the 4-digit confirmation number indicated on the original filing receipt) will become available for use as a DAS access code.</p>
</div>
</details>
<p>If the application<details wasopen>
filed at another participating Office, contact the PCT<summary>Step eServices2. HelpAsk Deskthe forOffice theof accessSecond codeFiling to retrieve be resent to the e-mail address you registered for DAS purposes.</p>the document</summary>
<div class="acc-body">
</div>
<p>The Office of Second </details>
Filing will retrieve the </div>
priority document from <!-- Tab 6: WIPO DAS Usage overview -->
<div id="p6" class="wipodas-panel wipodas-acc">
DAS only if you specifically request them to and indicate the access code on the application form.</p>
<details open></div>
</details>
<summary>Step 1. Ensure that the document is available to DAS</summary>
</div>
<!-- Tab 7: PCT and DAS -->
<div id="p7" class="acc-bodywipodas-panel wipodas-acc">
<details open>
<p>Request the Office of<summary>Using FirstDAS Filing to deposit a copy of the earlier application to DAS.</p>for PCT</summary>
<div class="acc-body">
<p>The<p>You exactcan meansuse ofDAS doingto this willmeet dependPCT onpriority thedocument requirements, ofby requesting the particularInternational OfficeBureau withto whichretrieve thean earlier applicationnational is/was filed.</p>
<p>See the DAS home page at <a href="https://www.wipo.int/das/en/">https://www.wipo.int/das/en/</a> and the <a href="https://www.wipo.int/pct/en/appguide/index.jsp">PCT Applicant’s Guide, Annex B</a> for the procedure to be followed at each DAS depositing Office, or contact that Office directly.</p>
<p>Links to detailed instructions provided by each Office can be found on the DAS website at: <a href="https://www.wipo.int/das/en/participating_offices.html">Participating Offices</a>.</p>
<p>To make an earlier PCT application filed at WIPO’s receiving Office RO/IB available to DAS, refer to a separate User Guide or regional application that has been filed with a participating Office, or an earlier international application filed with RO/AU, RO/BR, RO/CL, RO/CN, RO/DK, RO/EA, RO/ES, RO/FI, RO/IB, RO/IN, RO/MA, RO/NL and RO/SE.</p>
<p>In terms of giving permission, the International Bureau is treated like any other Office of Second Filing. Even though the International Bureau runs the core systems of DAS, it cannot access your applications for use as PCT priority documents, unless you have provided it with the access code. A separate detailed User Guide on how to use DAS for PCT purposes, named “PCT and DAS”, is available on the WIPO DAS web site at <a href="https://www.wipo.int/das/en/documentation.html">“PCT and DAS”</a>.</p>>https://www.wipo.int/das/en/documentation.html</a>.</p>
</div>
</details>
<details>
<p>Following your request<summary>Steps to the Office, you will either receive an access code, or else a code which was given to you as part of the application process (for example, in the case of a USPTO application, the 4-digit confirmation number indicated on the original filing receipt) will become available for use as a DAS access code.</p>
</div>
</details>
furnish priority documents (PCT)</summary>
<div class="acc-body">
<p>After you have taken the necessary steps with the Office of First Filing to make your priority application available via DAS, you can request the International Bureau to obtain it by marking the corresponding check-box in the Priority details of the request form PCT/RO/101 and indicating the access code in the relevant space.</p>
<details open>
<p>If you filed a PCT <summary>Stepapplication 2.without AskDAS theindications, Officeit ofis Secondalso Filingpossible to provide them retrieveafter the document</summary>
<div class="acc-body">
<p>The Office of Second Filing will retrieve the priority document from DAS only if you specifically request them to and indicate the access code on the application formfiling. This can be done in the ePCT service (<a href="https://pct.wipo.int">https://pct.wipo.int</a>) as an Online Action or via the Upload Documents feature. For detailed instructions on how to use ePCT, please refer to the HELP topics accessible via the ePCT home page.</p>
</div>
</details>
</div>
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