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Call for Consent for LegalRuleML Core Specification V1.0 as OASIS Standard

The markup language for expressing legal norms is now presented to the membership for approval

The OASIS LegalRuleML TC members [1] have approved submitting the following Committee Specification 02 to the OASIS Membership in a call for consent for OASIS Standard:

LegalRuleML Core Specification Version 1.0
Committee Specification 02
06 April 2020

This is a call to the primary or alternate representatives of OASIS Organizational Members to consent or object to this approval. You are welcome to register your consent explicitly on the ballot; however, your consent is assumed unless you register an objection [2]. To register an objection, you must: 

1. Indicate your objection on this ballot, and 

2. Provide a reason for your objection and/or a proposed remedy to the project. 

You may provide the reason in the comment box or by email to the LegalRuleML TC on its comment mailing list. If you provide your reason by email, please indicate in the subject line that this is in regard to the Call for Consent. Note that failing to provide a reason and/or remedy may result in an objection being deemed invalid.


The Call for Consent opens on 17 August 2021 at 00:00 UTC and closes on 30 August 2021 at 23:59 pm timezone. You can access the ballot at:

Internal link for voting members:

Publicly visible link:

OASIS members should ensure that their organization’s voting representative responds according to the organization’s wishes. If you do not know the name of your organization’s voting representative is, go to the My Account page at

then click the link for your Company (at the top of the page) and review the list of users for the name designated as “Primary”.

Information about LegalRuleML Core Specification V1.0

Legal texts, e.g. legislation, regulations, contracts, and case law, are the source of norms, guidelines, and rules that govern societies. As text, it is difficult to label, exchange, and process content except by hand. In our current web-enabled world, where innovative e-government and e-commerce are increasingly the norm, providing machine-processable forms of legal content is crucial. 

The objective of the LegalRuleML Core Specification Version 1.0 is to define a standard (expressed with XML-schema and Relax NG and on the basis of Consumer RuleML 1.02) that is able to represent the particularities of the legal normative rules with a rich, articulated, and meaningful mark-up language.  

LegalRuleML models: 

– defeasibility of rules and defeasible logic; 

– deontic operators (e.g., obligations, permissions, prohibitions, rights); 

– semantic management of negation; 

– temporal management of rules and temporality in rules; 

– classification of norms (i.e., constitutive, prescriptive); 

– jurisdiction of norms; 

– isomorphism between rules and natural language normative provisions; 

– identification of parts of the norms (e.g. bearer, conditions); 

– authorial tracking of rules. 

The TC received 4 Statements of Use from Livio Robaldo, Swansea University, CSIRO Data61, and CirSFID-AlmaAI.[3].


The prose specification document and related files are available here:

HTML (Authoritative):



Distribution ZIP file

For your convenience, OASIS provides a complete package of the specification document and related files in a ZIP distribution file. You can download the ZIP file at:

Additional information

[1] OASIS LegalRuleML TC

Project IPR page

[2] Comments may be submitted to the TC through the use of the OASIS TC Comment Facility as explained in the instructions located at

Comments submitted to the TC are publicly archived and can be viewed at

Members of the TC should send comments directly to

[3] Statements of Use:

The Statements of Use are packaged in