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Add LICENSE.md files for Home Assistant Yellow
Signed-off-by: Stefan Agner <[email protected]>
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LICENSE.md

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### Yellow KiCad Design License
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Copyright Nabu Casa 2023
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This source describes Open Hardware and is licensed under the CERN-OHL-S v2.
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You may redistribute and modify this source and make products using it under
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the terms of the CERN-OHL-S v2 (cern_ohl_s_v2.txt in this repository).
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This source is distributed WITHOUT ANY EXPRESS OR IMPLIED WARRANTY,
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INCLUDING OF MERCHANTABILITY, SATISFACTORY QUALITY AND FITNESS FOR A
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PARTICULAR PURPOSE. Please see the CERN-OHL-S v2 for applicable conditions.
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Source location: https://github.com/NabuCasa/yellow
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As per CERN-OHL-S v2 section 4, should You produce hardware based on this
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source, You must where practicable maintain the Source Location visible
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on the external case of the Gizmo or other products you make using this
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source.

Yellow.pretty/LICENSE.md

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### KiCad Libraries License
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This KiCad library is licensed under the [Creative Commons CC-BY-SA 4.0 License](https://creativecommons.org/licenses/by-sa/4.0/legalcode), with the following exception:
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---------
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_To the extent that the creation of electronic designs that use 'Licensed Material' can be considered to be 'Adapted Material', then the copyright holder waives article 3 of the license with respect to these designs and any generated files which use data provided as part of the 'Licensed Material'._
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---------
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You can read more about KiCad library licensing [here](http://kicad.org/libraries/license).
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**What does this mean?**
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KiCad libraries are licensed in such a way to ensure free use of library data for commercial, closed, and non-commercial projects without restriction. KiCad does not wish to exert any control over designs produced using the library data, or force users to reveal proprietary information contained in their designs. Neither do we wish to force users to attribute the KiCad libraries _within their design_.
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Use of the library data in a project does not (by itself) require that the design or any files generated from the design are licensed under the CC-BY-SA 4.0 License. You are free to use the library data in your own projects without the obligation to share your project files under this or any other license agreement.
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However, if you wish to redistribute the KiCad libraries, or parts thereof (including in modified form) as a collection then the exception above does not apply. Redistributed library collections must be shared under the same license agreement. Under these circumstances, the libraries must also retain attribution information, including the license documents which are distributed with the library files.
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----------------------
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**Warranty**
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The KiCad libraries are provided in the hope that they will be useful, but are provided without warranty of any kind, express or implied.
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The KiCad libraries are compiled by the KiCad community - if you find an error in the library data, please help the community and contribute a fix!

cern_ohl_w_v2.txt

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CERN Open Hardware Licence Version 2 - Weakly Reciprocal
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Preamble
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CERN has developed this licence to promote collaboration among
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hardware designers and to provide a legal tool which supports the
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freedom to use, study, modify, share and distribute hardware designs
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and products based on those designs. Version 2 of the CERN Open
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Hardware Licence comes in three variants: CERN-OHL-P (permissive); and
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two reciprocal licences: this licence, CERN-OHL-W (weakly reciprocal)
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and CERN-OHL-S (strongly reciprocal).
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The CERN-OHL-W is copyright CERN 2020. Anyone is welcome to use it, in
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unmodified form only.
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Use of this Licence does not imply any endorsement by CERN of any
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Licensor or their designs nor does it imply any involvement by CERN in
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their development.
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1 Definitions
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1.1 'Licence' means this CERN-OHL-W.
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1.2 'Compatible Licence' means
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a) any earlier version of the CERN Open Hardware licence, or
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b) any version of the CERN-OHL-S or the CERN-OHL-W, or
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c) any licence which permits You to treat the Source to which
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it applies as licensed under CERN-OHL-S or CERN-OHL-W
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provided that on Conveyance of any such Source, or any
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associated Product You treat the Source in question as being
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licensed under CERN-OHL-S or CERN-OHL-W as appropriate.
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1.3 'Source' means information such as design materials or digital
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code which can be applied to Make or test a Product or to
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prepare a Product for use, Conveyance or sale, regardless of its
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medium or how it is expressed. It may include Notices.
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1.4 'Covered Source' means Source that is explicitly made available
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under this Licence.
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1.5 'Product' means any device, component, work or physical object,
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whether in finished or intermediate form, arising from the use,
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application or processing of Covered Source.
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1.6 'Make' means to create or configure something, whether by
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manufacture, assembly, compiling, loading or applying Covered
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Source or another Product or otherwise.
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1.7 'Available Component' means any part, sub-assembly, library or
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code which:
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a) is licensed to You as Complete Source under a Compatible
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Licence; or
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b) is available, at the time a Product or the Source containing
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it is first Conveyed, to You and any other prospective
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licensees
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i) with sufficient rights and information (including any
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configuration and programming files and information
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about its characteristics and interfaces) to enable it
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either to be Made itself, or to be sourced and used to
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Make the Product; or
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ii) as part of the normal distribution of a tool used to
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design or Make the Product.
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1.8 'External Material' means anything (including Source) which:
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a) is only combined with Covered Source in such a way that it
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interfaces with the Covered Source using a documented
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interface which is described in the Covered Source; and
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b) is not a derivative of or contains Covered Source, or, if it
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is, it is solely to the extent necessary to facilitate such
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interfacing.
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1.9 'Complete Source' means the set of all Source necessary to Make
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a Product, in the preferred form for making modifications,
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including necessary installation and interfacing information
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both for the Product, and for any included Available Components.
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If the format is proprietary, it must also be made available in
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a format (if the proprietary tool can create it) which is
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viewable with a tool available to potential licensees and
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licensed under a licence approved by the Free Software
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Foundation or the Open Source Initiative. Complete Source need
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not include the Source of any Available Component, provided that
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You include in the Complete Source sufficient information to
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enable a recipient to Make or source and use the Available
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Component to Make the Product.
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1.10 'Source Location' means a location where a Licensor has placed
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Covered Source, and which that Licensor reasonably believes will
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remain easily accessible for at least three years for anyone to
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obtain a digital copy.
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1.11 'Notice' means copyright, acknowledgement and trademark notices,
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Source Location references, modification notices (subsection
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3.3(b)) and all notices that refer to this Licence and to the
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disclaimer of warranties that are included in the Covered
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Source.
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1.12 'Licensee' or 'You' means any person exercising rights under
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this Licence.
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1.13 'Licensor' means a natural or legal person who creates or
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modifies Covered Source. A person may be a Licensee and a
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Licensor at the same time.
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1.14 'Convey' means to communicate to the public or distribute.
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2 Applicability
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2.1 This Licence governs the use, copying, modification, Conveying
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of Covered Source and Products, and the Making of Products. By
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exercising any right granted under this Licence, You irrevocably
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accept these terms and conditions.
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2.2 This Licence is granted by the Licensor directly to You, and
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shall apply worldwide and without limitation in time.
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2.3 You shall not attempt to restrict by contract or otherwise the
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rights granted under this Licence to other Licensees.
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2.4 This Licence is not intended to restrict fair use, fair dealing,
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or any other similar right.
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3 Copying, Modifying and Conveying Covered Source
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3.1 You may copy and Convey verbatim copies of Covered Source, in
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any medium, provided You retain all Notices.
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3.2 You may modify Covered Source, other than Notices, provided that
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You irrevocably undertake to make that modified Covered Source
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available from a Source Location should You Convey a Product in
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circumstances where the recipient does not otherwise receive a
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copy of the modified Covered Source. In each case subsection 3.3
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shall apply.
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You may only delete Notices if they are no longer applicable to
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the corresponding Covered Source as modified by You and You may
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add additional Notices applicable to Your modifications.
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3.3 You may Convey modified Covered Source (with the effect that You
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shall also become a Licensor) provided that You:
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a) retain Notices as required in subsection 3.2;
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b) add a Notice to the modified Covered Source stating that You
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have modified it, with the date and brief description of how
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You have modified it;
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c) add a Source Location Notice for the modified Covered Source
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if You Convey in circumstances where the recipient does not
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otherwise receive a copy of the modified Covered Source; and
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d) license the modified Covered Source under the terms and
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conditions of this Licence (or, as set out in subsection
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8.3, a later version, if permitted by the licence of the
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original Covered Source). Such modified Covered Source must
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be licensed as a whole, but excluding Available Components
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contained in it or External Material to which it is
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interfaced, which remain licensed under their own applicable
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licences.
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4 Making and Conveying Products
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4.1 You may Make Products, and/or Convey them, provided that You
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either provide each recipient with a copy of the Complete Source
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or ensure that each recipient is notified of the Source Location
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of the Complete Source. That Complete Source includes Covered
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Source and You must accordingly satisfy Your obligations set out
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in subsection 3.3. If specified in a Notice, the Product must
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visibly and securely display the Source Location on it or its
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packaging or documentation in the manner specified in that
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Notice.
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4.2 Where You Convey a Product which incorporates External Material,
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the Complete Source for that Product which You are required to
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provide under subsection 4.1 need not include any Source for the
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External Material.
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4.3 You may license Products under terms of Your choice, provided
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that such terms do not restrict or attempt to restrict any
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recipients' rights under this Licence to the Covered Source.
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5 Research and Development
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You may Convey Covered Source, modified Covered Source or Products to
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a legal entity carrying out development, testing or quality assurance
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work on Your behalf provided that the work is performed on terms which
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prevent the entity from both using the Source or Products for its own
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internal purposes and Conveying the Source or Products or any
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modifications to them to any person other than You. Any modifications
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made by the entity shall be deemed to be made by You pursuant to
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subsection 3.2.
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6 DISCLAIMER AND LIABILITY
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6.1 DISCLAIMER OF WARRANTY -- The Covered Source and any Products
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are provided 'as is' and any express or implied warranties,
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including, but not limited to, implied warranties of
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merchantability, of satisfactory quality, non-infringement of
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third party rights, and fitness for a particular purpose or use
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are disclaimed in respect of any Source or Product to the
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maximum extent permitted by law. The Licensor makes no
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representation that any Source or Product does not or will not
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infringe any patent, copyright, trade secret or other
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proprietary right. The entire risk as to the use, quality, and
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performance of any Source or Product shall be with You and not
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the Licensor. This disclaimer of warranty is an essential part
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of this Licence and a condition for the grant of any rights
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granted under this Licence.
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6.2 EXCLUSION AND LIMITATION OF LIABILITY -- The Licensor shall, to
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the maximum extent permitted by law, have no liability for
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direct, indirect, special, incidental, consequential, exemplary,
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punitive or other damages of any character including, without
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limitation, procurement of substitute goods or services, loss of
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use, data or profits, or business interruption, however caused
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and on any theory of contract, warranty, tort (including
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negligence), product liability or otherwise, arising in any way
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in relation to the Covered Source, modified Covered Source
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and/or the Making or Conveyance of a Product, even if advised of
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the possibility of such damages, and You shall hold the
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Licensor(s) free and harmless from any liability, costs,
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damages, fees and expenses, including claims by third parties,
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in relation to such use.
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7 Patents
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7.1 Subject to the terms and conditions of this Licence, each
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Licensor hereby grants to You a perpetual, worldwide,
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non-exclusive, no-charge, royalty-free, irrevocable (except as
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stated in subsections 7.2 and 8.4) patent licence to Make, have
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Made, use, offer to sell, sell, import, and otherwise transfer
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the Covered Source and Products, where such licence applies only
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to those patent claims licensable by such Licensor that are
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necessarily infringed by exercising rights under the Covered
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Source as Conveyed by that Licensor.
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7.2 If You institute patent litigation against any entity (including
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a cross-claim or counterclaim in a lawsuit) alleging that the
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Covered Source or a Product constitutes direct or contributory
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patent infringement, or You seek any declaration that a patent
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licensed to You under this Licence is invalid or unenforceable
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then any rights granted to You under this Licence shall
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terminate as of the date such process is initiated.
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8 General
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8.1 If any provisions of this Licence are or subsequently become
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invalid or unenforceable for any reason, the remaining
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provisions shall remain effective.
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8.2 You shall not use any of the name (including acronyms and
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abbreviations), image, or logo by which the Licensor or CERN is
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known, except where needed to comply with section 3, or where
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the use is otherwise allowed by law. Any such permitted use
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shall be factual and shall not be made so as to suggest any kind
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of endorsement or implication of involvement by the Licensor or
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its personnel.
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8.3 CERN may publish updated versions and variants of this Licence
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which it considers to be in the spirit of this version, but may
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differ in detail to address new problems or concerns. New
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versions will be published with a unique version number and a
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variant identifier specifying the variant. If the Licensor has
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specified that a given variant applies to the Covered Source
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without specifying a version, You may treat that Covered Source
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as being released under any version of the CERN-OHL with that
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variant. If no variant is specified, the Covered Source shall be
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treated as being released under CERN-OHL-S. The Licensor may
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also specify that the Covered Source is subject to a specific
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version of the CERN-OHL or any later version in which case You
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may apply this or any later version of CERN-OHL with the same
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variant identifier published by CERN.
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You may treat Covered Source licensed under CERN-OHL-W as
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licensed under CERN-OHL-S if and only if all Available
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Components referenced in the Covered Source comply with the
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corresponding definition of Available Component for CERN-OHL-S.
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8.4 This Licence shall terminate with immediate effect if You fail
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to comply with any of its terms and conditions.
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8.5 However, if You cease all breaches of this Licence, then Your
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Licence from any Licensor is reinstated unless such Licensor has
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terminated this Licence by giving You, while You remain in
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breach, a notice specifying the breach and requiring You to cure
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it within 30 days, and You have failed to come into compliance
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in all material respects by the end of the 30 day period. Should
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You repeat the breach after receipt of a cure notice and
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subsequent reinstatement, this Licence will terminate
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immediately and permanently. Section 6 shall continue to apply
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after any termination.
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8.6 This Licence shall not be enforceable except by a Licensor
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acting as such, and third party beneficiary rights are
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specifically excluded.

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