Legal deposit (DL)

The legal deposit is a mechanism regulated by the Law 23 / 2011, of 29 July, of legal deposit, which obliges publishers and authors to deliver a series of copies of their production to the Biblioteca Nacional de Catalunya, which guarantees the dissemination and preservation of the bibliographic, audio, visual, audiovisual and digital heritage of Catalonia.


Before applying for a Legal Deposit (DL), the publishing units of the UPC They should be very aware that, as established by the DL Office website:

  1. Once the request has been made through the form of the Intellectual Property Service (SEPI), the applicant will receive by email the corresponding DL number.
  2. Next, the publishing unit will have to include the DL in the publication, always respecting them Guidelines set by the DL Office:
  • In books and printed brochures the number of DL will appear on the same sheet as the ISBN, on the back of the cover or on the cover (sheet that precedes the cover of a book and where there is usually only the title of the work).
  • In the daily press, yearbooks and printed magazines, the number of DL will appear in the header of each copy. In magazines with a cover and book format, it will appear on the back of the cover or on the cover.
  • The rest of the forms will carry the DL number in a clearly visible place.
  • The discs (sound, CD-ROM, etc.) will have the DL number printed on the label or on the center of the board and on the cover of each disc. The manufacturer of the disc must provide the printer of the bag or container with the DL number, in the event that the manufacturer of the disc and the container are not the same.
  • The DL must be included in this format, preceded by the abbreviations "DL" (without any point). The different volumes of a unitary work (multivolum work) have the same number of DL (although they have different ISBNs) followed, in roman numerals and in parentheses, of the number that corresponds to the volume. 
Construction Multivolume work

DL B. 8411-2012

DL B (number) -2014 (I)

DL B (number) -2014 (II)

DL B (number) -2014 (III)

Once the work has been published with the Legal Deposit (DL) and before its distribution or sale, the applicant must send several copies to the DL Office, which guarantees its preservation and conservation. as part of the bibliographic and documentary heritage.

Failure to send the copies is subject to sanction by the DL Office, a sanction that must be assumed by the unit of the UPC applicant. Therefore, it is very important to keep in mind that this delivery of copies is mandatory, whatever the type of publication (book, magazine, map ...), the format (paper, CD ...), and / or is intended for sale or not.

To find out the exact number of copies that must be delivered to the Library of Catalonia, you should check the "How many copies should be delivered? of your website.

Periodicals (magazines, newspapers, or yearbooks) are assigned a single DL number to the entire work to be printed in each of its issues. However, even if the DL is the same, the corresponding 4 copies (or 1 copy in the case of e-journals) of each issue published in the DL Office must also be sent.

The cancellation of the edition of any work (for example, the closing of the publication of a magazine) must be communicated to the DL Office, communication that the people or entities requesting the UPC can do by means of form of the Intellectual Property Service (SEPI).

Since the Library, Publications and Archives Service has a courier service with which you can send copies to the DL Office of the Biblioteca de Catalunya, applicants can send them by internal mail to the following Address:

UPC. Libraries, Publications and Archives Service
K2M building
Floor S1, Office S103-104
To the attention of Ester Badia

The copies must be delivered before two months, counted from the date of the application:

  • If, two months after requesting the DL number, the work has not been published, a new request must be made requesting an extension or cancellation. The extension will have a final duration of two more months.
  • At the end of this period, if the corresponding office does not receive any news, it will be able to initiate a sanction proposal that will have to assume the unit of the UPC applicant

Last update: 02 / 11 / 2020