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Cited documents

A cited document is a document cited either during any of the procedures before the EPO (search, examination, opposition, limitation, revocation or appeal), or by the applicant.


A cited document can be a patent document or an item of non-patent literature (XP).


We display all the cited documents which are available in our databases regardless of their country of origin.


These cited documents are grouped by origin (search, examination, opposition, applicant) and type (patent literature and non-patent literature). They can viewed by clicking on the sidebar option "Citations".


The letter in square brackets stands for the category of document.


Document categories:


X

Particularly relevant if taken alone

Y

Particularly relevant if combined with another document from the same category

A

Documents defining the state of the art and not prejudicing novelty or inventive step

O

Non-written disclosure

P

Intermediate document

T

Theory or principle underlying the invention

E

Earlier patent application, but published after the filing date of the application searched (potentially conflicting patent documents)

D

Document cited in the application

L

Document cited for other reasons

&

Member of the same patent family, corresponding document