About Search
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How to access the Common Search Tool
Text on how to access the CST
Learning about the tool
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This is the Single Access Portal section for Search.epo.org.
Search.epo.org can be found on https://search.epo.org make sure you login with your EPO 'Z-account' completed with @ext.epo.org and your password as used in EPOQUE Net.
Example: Z8NL123@ext.epo.org
More information about search provided by the Patent Academy (you will need credentials)
Please find the Frequently asked questions (FAQ) below
Pilot - FAQ
Q1: Why is only the first alternative highlighted A: CST - or better Elastic Search - will only evaluate alternatives, until a hit is found. When searching for 50UG(xxx, (yyy, zzz)) and after xxx, yyy is found, shortly before zzz, only xxx and yyy are highlighted, as a hit has been found. Q2: How are the operators S and P defined, as they don't act on sentences A: P Operator is approximated by 45D. S is, thanks to annotations from APL searching in lexical sentences for PL. Q3: The zoom function does not work properly. When pressing CTRL + - the window gets zoomed out. Q4: What to do if a query covers too many terms / is too complex? Image
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CST limits the number of terms per query (currently to 700k), to avoid queries taking too long. In case you are affected by this error, you need to reduce the number of terms found. This can be done by either using more specific terms, as the error message suggests. In the case of a valid German query for any kind of oil, +öl+ will fail. Either &+öl+ or +öl+/DESCDE will currently execute - in isolation. The limit is per query, which includes all modified markers. As queries are cached, when they are executed, a second possibility is to disable the markers with the highest number of terms and run the query. Now enable the remaining marker - one for one. If a single marker does not hit the limit, finally the search result will be available for all markers. Keep in mind though that the next day (even after two hours) the cache is cleared and the same query needs to be executed in steps again. Q5: How can I add information to CST ? CST allow introducing the Filling Date and Priority Date of the application you are working on under the Biblio tab in the Application View. Image
![]() By adding these values, CST will be able to easily identify if a document found is late or in time.
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![]() Find similar, can also be applied on the text introduced under the Text section. However, please take into account that at this stage of the development no confidential information is expected to be introduced in CST. Q6: How do I change the font size in CST ? You can change the font size in CST in two ways:
Q7: Can a “Find Similar” be made using text from different panels? No, a FindSimilar cannot take text from more than one panel. Q8: How can I search for a term only in lowercase letters (example : mg) ? The literals operator & does not work directly with terms with all letters in lowercase and no accents. Indeed, the term &mg will trigger an error or will be ignored. To limit the search of a particular term to its form in lowercase you should use the operator nov to discard all forms containing at least one uppercase letter: ex: mg nov &(MG,Mg,mG) Will match mg but not MG, Mg or mG. |