Guide to the CERN OHL v.1.2

This document contains guidelines on how to apply the CERN OHL v.1.2 to
a given hardware design, and on the use of hardware designs licensed
under the CERN OHL v.1.2.

How to apply the CERN OHL v.1.2 to a hardware design
----------------------------------------------------

Pre-requisite:

Authorship/ownership of the design must be clear and undisputed. Only
the legal owner of the rights in the hardware design may decide under
what conditions to make it available. If ownership is vested in more
than one person/entity, there must be an agreement among the owners to
release the hardware design as open hardware, and under the CERN OHL in
particular.

The hardware design documentation and files package

Pack all your hardware design documentation files (schematics,
layout...) as well as the documents listed below in an archive file.
This will ensure the licensee downloads everything in one go. It is best
to archive the files using a format everybody can open. Schematics and
layouts should be included in both source form and a format readable by
everybody, such as pdf.

The following documents must be distributed together with the hardware
design documentation:

-   Document containing the CERN OHL v.1.2 (e.g. LICENSE.PDF)
-   This Guide
-   Text files (plain ASCII file), where information can be added to but
    not removed from, listing:

    -   Contact point wishing to receive information about manufactured
        Products (see section 4.2) (e.g. PRODUCT.TXT);
    -   Modifications made by Licensee (see section 3.4.b) (e.g.
        CHANGES.TXT)

What to do with the hardware design documentation

Include in the hardware design documentation, for instance as a header,
the following elements (see section 3.1 CERN OHL v.1.2):

-   a copyright notice reflecting actual ownership;
-   a notice that the hardware design documentation is licensed under
    the CERN OHL v.1.2, possibly with a link to
    <http://ohwr.org/cernohl> where the licence texts are hosted:

    -   “Licensed under CERN OHL v.1.2 or later”
    -   “Licensed under CERN OHL v.1.2”;

-   a disclaimer of warranties;
-   a Documentation Location if you wish to specify one;

The following is an example of header if CERN is the Licensor:

Copyright CERN 2013.

This documentation describes Open Hardware and is licensed under the
CERN OHL v. 1.2.

You may redistribute and modify this documentation under the terms of
the CERN OHL v.1.2. (<http://ohwr.org/cernohl>). This documentation is
distributed WITHOUT ANY EXPRESS OR IMPLIED WARRANTY, INCLUDING OF
MERCHANTABILITY, SATISFACTORY QUALITY AND FITNESS FOR A PARTICULAR
PURPOSE. Please see the CERN OHL v.1.2 for applicable conditions

Include in a part of the Documentation corresponding to a visible part
of the Product (e.g. silkscreen or top copper for a Printed Circuit
Board):

-   the licence notice: “Licensed under CERN OHL v.1.2”

    -   Do **not** include the CERN logo or the copyright notice

-   the Documentation Location if you wish it to appear on the Product,
    thus enabling all subsequent recipients of the Products to find the
    Documentation.

How to deal with hardware designs licensed under the CERN OHL v.1.2
-------------------------------------------------------------------

Generally speaking, you must always comply with any obligations applying
to a particular design (detailed in a contract or accompanying licence).
If you receive hardware designs licensed under the CERN OHL v.1.2, the
obligations are to:

-   Keep intact all the copyright and trademark notices and
    Documentation Location notices that are on the hardware design
    documentation;
-   Keep intact the references to the CERN OHL v.1.2;
-   Keep intact the disclaimer of warranties.

If you modify hardware design that you received from someone else that
is licensed under the CERN OHL v.1.2, you must

-   Keep intact all the notices referred to above;
-   Include notices that you have modified the hardware designs,
    detailing what modifications where made (e.g. in a CHANGES.TXT
    file);
-   Add the appropriate copyright notice and Documentation Location to
    the modifications that were made;
-   license the modifications under the CERN OHL v.1.2 if you distribute
    them.