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		Default operators You can enter your search terms without having to type in the default operators AND or OR, as the system automatically uses the correct operator within the following fields: • For the title and abstract fields, the default operator is AND • For the publication number , application number and priority number fields, the default operator is OR • For the inventor and applicant fields, the default operator is AND • For the ECLA and IPC fields, the default operator is AND • The default operator for combining 2 or more input fields is AND • No operators can be used for the publication date . For more information on patent searching, see the following pages: • Boolean operators • Limitations • Nested queries