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Limitations

esp@cenet® has the following search limitations:

Maximum of 4 search terms per field
Maximum of 21 search terms and 20 operators per mask
Search terms in the abstract must be in English
When combining search fields the default operator is AND
Truncation limitations
It is not possible to search within date ranges
Characters such as apostrophe, slash and hyphen are not recognised. Please use blanks instead
Not all documents have English abstracts, titles, European classification or international classifications (check coverage)
Different search mask depending on the database you choose to search in
Maximum of 500 matching documents listed 10 at a time in extended format or 20 at a time in compact format
Cannot display full document or print all pages in one go
Maximum of 20 documents stored in "my patents list" for 30 days
It is not possible to store XP documents in "my patents list"
It is not possible to retrieve an XP document by the name of the author or to limit a search to XP documents only
No statistical analysis possible
No search history provided