1*5199d831SAndrew GeisslerCERN Open Hardware Licence Version 2 - Weakly Reciprocal 2*5199d831SAndrew Geissler 3*5199d831SAndrew GeisslerPreamble 4*5199d831SAndrew Geissler 5*5199d831SAndrew GeisslerCERN has developed this licence to promote collaboration among 6*5199d831SAndrew Geisslerhardware designers and to provide a legal tool which supports the 7*5199d831SAndrew Geisslerfreedom to use, study, modify, share and distribute hardware designs 8*5199d831SAndrew Geisslerand products based on those designs. Version 2 of the CERN Open 9*5199d831SAndrew GeisslerHardware Licence comes in three variants: CERN-OHL-P (permissive); and 10*5199d831SAndrew Geisslertwo reciprocal licences: this licence, CERN- OHL-W (weakly reciprocal) 11*5199d831SAndrew Geisslerand CERN-OHL-S (strongly reciprocal). 12*5199d831SAndrew Geissler 13*5199d831SAndrew GeisslerThe CERN-OHL-W is copyright CERN 2020. Anyone is welcome to use it, in 14*5199d831SAndrew Geisslerunmodified form only. 15*5199d831SAndrew Geissler 16*5199d831SAndrew GeisslerUse of this Licence does not imply any endorsement by CERN of any 17*5199d831SAndrew GeisslerLicensor or their designs nor does it imply any involvement by CERN in 18*5199d831SAndrew Geisslertheir development. 19*5199d831SAndrew Geissler 20*5199d831SAndrew Geissler 21*5199d831SAndrew Geissler1 Definitions 22*5199d831SAndrew Geissler 23*5199d831SAndrew Geissler 1.1 'Licence' means this CERN-OHL-W. 24*5199d831SAndrew Geissler 25*5199d831SAndrew Geissler 1.2 'Compatible Licence' means 26*5199d831SAndrew Geissler 27*5199d831SAndrew Geissler a) any earlier version of the CERN Open Hardware licence, or 28*5199d831SAndrew Geissler 29*5199d831SAndrew Geissler b) any version of the CERN-OHL-S or the CERN-OHL-W, or 30*5199d831SAndrew Geissler 31*5199d831SAndrew Geissler c) any licence which permits You to treat the Source to which 32*5199d831SAndrew Geissler it applies as licensed under CERN-OHL-S or CERN-OHL-W 33*5199d831SAndrew Geissler provided that on Conveyance of any such Source, or any 34*5199d831SAndrew Geissler associated Product You treat the Source in question as being 35*5199d831SAndrew Geissler licensed under CERN-OHL-S or CERN-OHL-W as appropriate. 36*5199d831SAndrew Geissler 37*5199d831SAndrew Geissler 1.3 'Source' means information such as design materials or digital 38*5199d831SAndrew Geissler code which can be applied to Make or test a Product or to 39*5199d831SAndrew Geissler prepare a Product for use, Conveyance or sale, regardless of its 40*5199d831SAndrew Geissler medium or how it is expressed. It may include Notices. 41*5199d831SAndrew Geissler 42*5199d831SAndrew Geissler 1.4 'Covered Source' means Source that is explicitly made available 43*5199d831SAndrew Geissler under this Licence. 44*5199d831SAndrew Geissler 45*5199d831SAndrew Geissler 1.5 'Product' means any device, component, work or physical object, 46*5199d831SAndrew Geissler whether in finished or intermediate form, arising from the use, 47*5199d831SAndrew Geissler application or processing of Covered Source. 48*5199d831SAndrew Geissler 49*5199d831SAndrew Geissler 1.6 'Make' means to create or configure something, whether by 50*5199d831SAndrew Geissler manufacture, assembly, compiling, loading or applying Covered 51*5199d831SAndrew Geissler Source or another Product or otherwise. 52*5199d831SAndrew Geissler 53*5199d831SAndrew Geissler 1.7 'Available Component' means any part, sub-assembly, library or 54*5199d831SAndrew Geissler code which: 55*5199d831SAndrew Geissler 56*5199d831SAndrew Geissler a) is licensed to You as Complete Source under a Compatible 57*5199d831SAndrew Geissler Licence; or 58*5199d831SAndrew Geissler 59*5199d831SAndrew Geissler b) is available, at the time a Product or the Source containing 60*5199d831SAndrew Geissler it is first Conveyed, to You and any other prospective 61*5199d831SAndrew Geissler licensees 62*5199d831SAndrew Geissler 63*5199d831SAndrew Geissler i) with sufficient rights and information (including any 64*5199d831SAndrew Geissler configuration and programming files and information 65*5199d831SAndrew Geissler about its characteristics and interfaces) to enable it 66*5199d831SAndrew Geissler either to be Made itself, or to be sourced and used to 67*5199d831SAndrew Geissler Make the Product; or 68*5199d831SAndrew Geissler ii) as part of the normal distribution of a tool used to 69*5199d831SAndrew Geissler design or Make the Product. 70*5199d831SAndrew Geissler 71*5199d831SAndrew Geissler 1.8 'External Material' means anything (including Source) which: 72*5199d831SAndrew Geissler 73*5199d831SAndrew Geissler a) is only combined with Covered Source in such a way that it 74*5199d831SAndrew Geissler interfaces with the Covered Source using a documented 75*5199d831SAndrew Geissler interface which is described in the Covered Source; and 76*5199d831SAndrew Geissler 77*5199d831SAndrew Geissler b) is not a derivative of or contains Covered Source, or, if it 78*5199d831SAndrew Geissler is, it is solely to the extent necessary to facilitate such 79*5199d831SAndrew Geissler interfacing. 80*5199d831SAndrew Geissler 81*5199d831SAndrew Geissler 1.9 'Complete Source' means the set of all Source necessary to Make 82*5199d831SAndrew Geissler a Product, in the preferred form for making modifications, 83*5199d831SAndrew Geissler including necessary installation and interfacing information 84*5199d831SAndrew Geissler both for the Product, and for any included Available Components. 85*5199d831SAndrew Geissler If the format is proprietary, it must also be made available in 86*5199d831SAndrew Geissler a format (if the proprietary tool can create it) which is 87*5199d831SAndrew Geissler viewable with a tool available to potential licensees and 88*5199d831SAndrew Geissler licensed under a licence approved by the Free Software 89*5199d831SAndrew Geissler Foundation or the Open Source Initiative. Complete Source need 90*5199d831SAndrew Geissler not include the Source of any Available Component, provided that 91*5199d831SAndrew Geissler You include in the Complete Source sufficient information to 92*5199d831SAndrew Geissler enable a recipient to Make or source and use the Available 93*5199d831SAndrew Geissler Component to Make the Product. 94*5199d831SAndrew Geissler 95*5199d831SAndrew Geissler 1.10 'Source Location' means a location where a Licensor has placed 96*5199d831SAndrew Geissler Covered Source, and which that Licensor reasonably believes will 97*5199d831SAndrew Geissler remain easily accessible for at least three years for anyone to 98*5199d831SAndrew Geissler obtain a digital copy. 99*5199d831SAndrew Geissler 100*5199d831SAndrew Geissler 1.11 'Notice' means copyright, acknowledgement and trademark notices, 101*5199d831SAndrew Geissler Source Location references, modification notices (subsection 102*5199d831SAndrew Geissler 3.3(b)) and all notices that refer to this Licence and to the 103*5199d831SAndrew Geissler disclaimer of warranties that are included in the Covered 104*5199d831SAndrew Geissler Source. 105*5199d831SAndrew Geissler 106*5199d831SAndrew Geissler 1.12 'Licensee' or 'You' means any person exercising rights under 107*5199d831SAndrew Geissler this Licence. 108*5199d831SAndrew Geissler 109*5199d831SAndrew Geissler 1.13 'Licensor' means a natural or legal person who creates or 110*5199d831SAndrew Geissler modifies Covered Source. A person may be a Licensee and a 111*5199d831SAndrew Geissler Licensor at the same time. 112*5199d831SAndrew Geissler 113*5199d831SAndrew Geissler 1.14 'Convey' means to communicate to the public or distribute. 114*5199d831SAndrew Geissler 115*5199d831SAndrew Geissler 116*5199d831SAndrew Geissler2 Applicability 117*5199d831SAndrew Geissler 118*5199d831SAndrew Geissler 2.1 This Licence governs the use, copying, modification, Conveying 119*5199d831SAndrew Geissler of Covered Source and Products, and the Making of Products. By 120*5199d831SAndrew Geissler exercising any right granted under this Licence, You irrevocably 121*5199d831SAndrew Geissler accept these terms and conditions. 122*5199d831SAndrew Geissler 123*5199d831SAndrew Geissler 2.2 This Licence is granted by the Licensor directly to You, and 124*5199d831SAndrew Geissler shall apply worldwide and without limitation in time. 125*5199d831SAndrew Geissler 126*5199d831SAndrew Geissler 2.3 You shall not attempt to restrict by contract or otherwise the 127*5199d831SAndrew Geissler rights granted under this Licence to other Licensees. 128*5199d831SAndrew Geissler 129*5199d831SAndrew Geissler 2.4 This Licence is not intended to restrict fair use, fair dealing, 130*5199d831SAndrew Geissler or any other similar right. 131*5199d831SAndrew Geissler 132*5199d831SAndrew Geissler 133*5199d831SAndrew Geissler3 Copying, modifying and Conveying Covered Source 134*5199d831SAndrew Geissler 135*5199d831SAndrew Geissler 3.1 You may copy and Convey verbatim copies of Covered Source, in 136*5199d831SAndrew Geissler any medium, provided You retain all Notices. 137*5199d831SAndrew Geissler 138*5199d831SAndrew Geissler 3.2 You may modify Covered Source, other than Notices, provided that 139*5199d831SAndrew Geissler You irrevocably undertake to make that modified Covered Source 140*5199d831SAndrew Geissler available from a Source Location should You Convey a Product in 141*5199d831SAndrew Geissler circumstances where the recipient does not otherwise receive a 142*5199d831SAndrew Geissler copy of the modified Covered Source. In each case subsection 3.3 143*5199d831SAndrew Geissler shall apply. 144*5199d831SAndrew Geissler 145*5199d831SAndrew Geissler You may only delete Notices if they are no longer applicable to 146*5199d831SAndrew Geissler the corresponding Covered Source as modified by You and You may 147*5199d831SAndrew Geissler add additional Notices applicable to Your modifications. 148*5199d831SAndrew Geissler 149*5199d831SAndrew Geissler 3.3 You may Convey modified Covered Source (with the effect that You 150*5199d831SAndrew Geissler shall also become a Licensor) provided that You: 151*5199d831SAndrew Geissler 152*5199d831SAndrew Geissler a) retain Notices as required in subsection 3.2; 153*5199d831SAndrew Geissler 154*5199d831SAndrew Geissler b) add a Notice to the modified Covered Source stating that You 155*5199d831SAndrew Geissler have modified it, with the date and brief description of how 156*5199d831SAndrew Geissler You have modified it; 157*5199d831SAndrew Geissler 158*5199d831SAndrew Geissler c) add a Source Location Notice for the modified Covered Source 159*5199d831SAndrew Geissler if You Convey in circumstances where the recipient does not 160*5199d831SAndrew Geissler otherwise receive a copy of the modified Covered Source; and 161*5199d831SAndrew Geissler 162*5199d831SAndrew Geissler d) license the modified Covered Source under the terms and 163*5199d831SAndrew Geissler conditions of this Licence (or, as set out in subsection 164*5199d831SAndrew Geissler 8.3, a later version, if permitted by the licence of the 165*5199d831SAndrew Geissler original Covered Source). Such modified Covered Source must 166*5199d831SAndrew Geissler be licensed as a whole, but excluding Available Components 167*5199d831SAndrew Geissler contained in it or External Material to which it is 168*5199d831SAndrew Geissler interfaced, which remain licensed under their own applicable 169*5199d831SAndrew Geissler licences. 170*5199d831SAndrew Geissler 171*5199d831SAndrew Geissler 172*5199d831SAndrew Geissler4 Making and Conveying Products 173*5199d831SAndrew Geissler 174*5199d831SAndrew Geissler 4.1 You may Make Products, and/or Convey them, provided that You 175*5199d831SAndrew Geissler either provide each recipient with a copy of the Complete Source 176*5199d831SAndrew Geissler or ensure that each recipient is notified of the Source Location 177*5199d831SAndrew Geissler of the Complete Source. That Complete Source includes Covered 178*5199d831SAndrew Geissler Source and You must accordingly satisfy Your obligations set out 179*5199d831SAndrew Geissler in subsection 3.3. If specified in a Notice, the Product must 180*5199d831SAndrew Geissler visibly and securely display the Source Location on it or its 181*5199d831SAndrew Geissler packaging or documentation in the manner specified in that 182*5199d831SAndrew Geissler Notice. 183*5199d831SAndrew Geissler 184*5199d831SAndrew Geissler 4.2 Where You Convey a Product which incorporates External Material, 185*5199d831SAndrew Geissler the Complete Source for that Product which You are required to 186*5199d831SAndrew Geissler provide under subsection 4.1 need not include any Source for the 187*5199d831SAndrew Geissler External Material. 188*5199d831SAndrew Geissler 189*5199d831SAndrew Geissler 4.3 You may license Products under terms of Your choice, provided 190*5199d831SAndrew Geissler that such terms do not restrict or attempt to restrict any 191*5199d831SAndrew Geissler recipients' rights under this Licence to the Covered Source. 192*5199d831SAndrew Geissler 193*5199d831SAndrew Geissler 194*5199d831SAndrew Geissler5 Research and Development 195*5199d831SAndrew Geissler 196*5199d831SAndrew GeisslerYou may Convey Covered Source, modified Covered Source or Products to 197*5199d831SAndrew Geisslera legal entity carrying out development, testing or quality assurance 198*5199d831SAndrew Geisslerwork on Your behalf provided that the work is performed on terms which 199*5199d831SAndrew Geisslerprevent the entity from both using the Source or Products for its own 200*5199d831SAndrew Geisslerinternal purposes and Conveying the Source or Products or any 201*5199d831SAndrew Geisslermodifications to them to any person other than You. Any modifications 202*5199d831SAndrew Geisslermade by the entity shall be deemed to be made by You pursuant to 203*5199d831SAndrew Geisslersubsection 3.2. 204*5199d831SAndrew Geissler 205*5199d831SAndrew Geissler 206*5199d831SAndrew Geissler6 DISCLAIMER AND LIABILITY 207*5199d831SAndrew Geissler 208*5199d831SAndrew Geissler 6.1 DISCLAIMER OF WARRANTY -- The Covered Source and any Products 209*5199d831SAndrew Geissler are provided 'as is' and any express or implied warranties, 210*5199d831SAndrew Geissler including, but not limited to, implied warranties of 211*5199d831SAndrew Geissler merchantability, of satisfactory quality, non-infringement of 212*5199d831SAndrew Geissler third party rights, and fitness for a particular purpose or use 213*5199d831SAndrew Geissler are disclaimed in respect of any Source or Product to the 214*5199d831SAndrew Geissler maximum extent permitted by law. The Licensor makes no 215*5199d831SAndrew Geissler representation that any Source or Product does not or will not 216*5199d831SAndrew Geissler infringe any patent, copyright, trade secret or other 217*5199d831SAndrew Geissler proprietary right. The entire risk as to the use, quality, and 218*5199d831SAndrew Geissler performance of any Source or Product shall be with You and not 219*5199d831SAndrew Geissler the Licensor. This disclaimer of warranty is an essential part 220*5199d831SAndrew Geissler of this Licence and a condition for the grant of any rights 221*5199d831SAndrew Geissler granted under this Licence. 222*5199d831SAndrew Geissler 223*5199d831SAndrew Geissler 6.2 EXCLUSION AND LIMITATION OF LIABILITY -- The Licensor shall, to 224*5199d831SAndrew Geissler the maximum extent permitted by law, have no liability for 225*5199d831SAndrew Geissler direct, indirect, special, incidental, consequential, exemplary, 226*5199d831SAndrew Geissler punitive or other damages of any character including, without 227*5199d831SAndrew Geissler limitation, procurement of substitute goods or services, loss of 228*5199d831SAndrew Geissler use, data or profits, or business interruption, however caused 229*5199d831SAndrew Geissler and on any theory of contract, warranty, tort (including 230*5199d831SAndrew Geissler negligence), product liability or otherwise, arising in any way 231*5199d831SAndrew Geissler in relation to the Covered Source, modified Covered Source 232*5199d831SAndrew Geissler and/or the Making or Conveyance of a Product, even if advised of 233*5199d831SAndrew Geissler the possibility of such damages, and You shall hold the 234*5199d831SAndrew Geissler Licensor(s) free and harmless from any liability, costs, 235*5199d831SAndrew Geissler damages, fees and expenses, including claims by third parties, 236*5199d831SAndrew Geissler in relation to such use. 237*5199d831SAndrew Geissler 238*5199d831SAndrew Geissler 239*5199d831SAndrew Geissler7 Patents 240*5199d831SAndrew Geissler 241*5199d831SAndrew Geissler 7.1 Subject to the terms and conditions of this Licence, each 242*5199d831SAndrew Geissler Licensor hereby grants to You a perpetual, worldwide, 243*5199d831SAndrew Geissler non-exclusive, no-charge, royalty-free, irrevocable (except as 244*5199d831SAndrew Geissler stated in subsections 7.2 and 8.4) patent license to Make, have 245*5199d831SAndrew Geissler Made, use, offer to sell, sell, import, and otherwise transfer 246*5199d831SAndrew Geissler the Covered Source and Products, where such licence applies only 247*5199d831SAndrew Geissler to those patent claims licensable by such Licensor that are 248*5199d831SAndrew Geissler necessarily infringed by exercising rights under the Covered 249*5199d831SAndrew Geissler Source as Conveyed by that Licensor. 250*5199d831SAndrew Geissler 251*5199d831SAndrew Geissler 7.2 If You institute patent litigation against any entity (including 252*5199d831SAndrew Geissler a cross-claim or counterclaim in a lawsuit) alleging that the 253*5199d831SAndrew Geissler Covered Source or a Product constitutes direct or contributory 254*5199d831SAndrew Geissler patent infringement, or You seek any declaration that a patent 255*5199d831SAndrew Geissler licensed to You under this Licence is invalid or unenforceable 256*5199d831SAndrew Geissler then any rights granted to You under this Licence shall 257*5199d831SAndrew Geissler terminate as of the date such process is initiated. 258*5199d831SAndrew Geissler 259*5199d831SAndrew Geissler 260*5199d831SAndrew Geissler8 General 261*5199d831SAndrew Geissler 262*5199d831SAndrew Geissler 8.1 If any provisions of this Licence are or subsequently become 263*5199d831SAndrew Geissler invalid or unenforceable for any reason, the remaining 264*5199d831SAndrew Geissler provisions shall remain effective. 265*5199d831SAndrew Geissler 266*5199d831SAndrew Geissler 8.2 You shall not use any of the name (including acronyms and 267*5199d831SAndrew Geissler abbreviations), image, or logo by which the Licensor or CERN is 268*5199d831SAndrew Geissler known, except where needed to comply with section 3, or where 269*5199d831SAndrew Geissler the use is otherwise allowed by law. Any such permitted use 270*5199d831SAndrew Geissler shall be factual and shall not be made so as to suggest any kind 271*5199d831SAndrew Geissler of endorsement or implication of involvement by the Licensor or 272*5199d831SAndrew Geissler its personnel. 273*5199d831SAndrew Geissler 274*5199d831SAndrew Geissler 8.3 CERN may publish updated versions and variants of this Licence 275*5199d831SAndrew Geissler which it considers to be in the spirit of this version, but may 276*5199d831SAndrew Geissler differ in detail to address new problems or concerns. New 277*5199d831SAndrew Geissler versions will be published with a unique version number and a 278*5199d831SAndrew Geissler variant identifier specifying the variant. If the Licensor has 279*5199d831SAndrew Geissler specified that a given variant applies to the Covered Source 280*5199d831SAndrew Geissler without specifying a version, You may treat that Covered Source 281*5199d831SAndrew Geissler as being released under any version of the CERN-OHL with that 282*5199d831SAndrew Geissler variant. If no variant is specified, the Covered Source shall be 283*5199d831SAndrew Geissler treated as being released under CERN-OHL-S. The Licensor may 284*5199d831SAndrew Geissler also specify that the Covered Source is subject to a specific 285*5199d831SAndrew Geissler version of the CERN-OHL or any later version in which case You 286*5199d831SAndrew Geissler may apply this or any later version of CERN-OHL with the same 287*5199d831SAndrew Geissler variant identifier published by CERN. 288*5199d831SAndrew Geissler 289*5199d831SAndrew Geissler You may treat Covered Source licensed under CERN-OHL-W as 290*5199d831SAndrew Geissler licensed under CERN-OHL-S if and only if all Available 291*5199d831SAndrew Geissler Components referenced in the Covered Source comply with the 292*5199d831SAndrew Geissler corresponding definition of Available Component for CERN-OHL-S. 293*5199d831SAndrew Geissler 294*5199d831SAndrew Geissler 8.4 This Licence shall terminate with immediate effect if You fail 295*5199d831SAndrew Geissler to comply with any of its terms and conditions. 296*5199d831SAndrew Geissler 297*5199d831SAndrew Geissler 8.5 However, if You cease all breaches of this Licence, then Your 298*5199d831SAndrew Geissler Licence from any Licensor is reinstated unless such Licensor has 299*5199d831SAndrew Geissler terminated this Licence by giving You, while You remain in 300*5199d831SAndrew Geissler breach, a notice specifying the breach and requiring You to cure 301*5199d831SAndrew Geissler it within 30 days, and You have failed to come into compliance 302*5199d831SAndrew Geissler in all material respects by the end of the 30 day period. Should 303*5199d831SAndrew Geissler You repeat the breach after receipt of a cure notice and 304*5199d831SAndrew Geissler subsequent reinstatement, this Licence will terminate 305*5199d831SAndrew Geissler immediately and permanently. Section 6 shall continue to apply 306*5199d831SAndrew Geissler after any termination. 307*5199d831SAndrew Geissler 308*5199d831SAndrew Geissler 8.6 This Licence shall not be enforceable except by a Licensor 309*5199d831SAndrew Geissler acting as such, and third party beneficiary rights are 310*5199d831SAndrew Geissler specifically excluded. 311