---

name: connector-cocounsel-thomson-reuters
description: Use when a lawyer needs to hand off a complex legal research query to Thomson Reuters CoCounsel — the AI-assisted research layer built on TR's Westlaw database — because the query requires case law retrieval, statutory interpretation, or secondary-source research at a depth beyond the in-house skill set. Requires the user's organization to hold an active Thomson Reuters enterprise license. Triggers on requests involving US case law, multi-jurisdictional statutory research, or deep regulatory analysis where TR's curated legal database adds verifiable authority.
license: MIT
metadata:
id: connector.cocounsel-thomson-reuters
category: connector
jurisdictions: [multi]
priority: P2
intent: [connector]
related: [connector-eur-lex, connector-legifrance, connector-sec-edgar, connector-companies-house-uk, connector-legal-data-hunter]
source: Louis — HAQQ Legal AI (github.com/sboghossian/mini-claude-for-legal)
version: "1.0"

Connector — Thomson Reuters CoCounsel

What it does

Thomson Reuters CoCounsel is an AI-powered legal research assistant built on Thomson Reuters' authoritative legal content databases — primarily Westlaw (US, UK, Canada, Australia, and select EU jurisdictions) and Practical Law. The CoCounsel connector allows the legal-AI platform to route research queries that require verified, citation-backed legal authority to CoCounsel and return the results as structured research memos.

This connector is appropriate when:

• The research requires actual case citations that can be Shepardized or KeyCite-verified.
• The question involves US federal or state statutory interpretation from primary sources.
• The matter requires secondary source research (law review articles, Practical Law notes, treatise excerpts).
• The in-house skill set cannot answer the question with sufficient legal precision without risking hallucinated citations.

Setup / auth

Enterprise license requirement

This connector is not available to users on free or individual plans. It requires an active Thomson Reuters enterprise account with CoCounsel feature access enabled.

Authentication is federated: the user logs in to the legal-AI platform with their firm credentials, and the platform uses the firm's TR enterprise license to access CoCounsel on the user's behalf. No separate CoCounsel login is required within the assistant workflow.

Configuration steps:

1. Firm's TR account manager enables CoCounsel API access.
2. Platform receives TR OAuth client credentials for the firm's account.
3. Tokens are stored per-tenant in the platform's secrets manager.
4. Each authorized user within the firm can invoke CoCounsel via the assistant.

Access model

Access level	Who gets it	What they can do
Full CoCounsel	Partner-level or designated research lawyers	All research tasks, Westlaw full-text retrieval
Limited CoCounsel	Associates, trainees	Research tasks; Westlaw snippets (not full text)
No access	Non-lawyer staff	Cannot invoke this connector

Capabilities

Research query hand-off

The primary function: accept a natural-language research question, forward it to CoCounsel, and return a structured research response.

The query should be framed as a focused legal question, not a vague topic. Examples of well-formed queries:

• "What is the current standard in the Second Circuit for piercing the corporate veil in a single-member LLC?"
• "Summarize UK Court of Appeal decisions from 2018–2024 on frustration of contract in force majeure clauses."
• "What are the disclosure obligations under SEC Rule 10b-5 in the context of a going-private transaction?"

CoCounsel returns:

• A research memo (typically 2–8 pages) with citations.
• Key cited cases with KeyCite flags (positive / negative treatment).
• Relevant statutes with current version notation.

Practical Law retrieval

For transactional and compliance questions, CoCounsel can surface Practical Law notes — practice area–specific how-to guides and standard documents maintained by TR editorial teams. These are particularly useful for:

• Understanding deal market practice in a jurisdiction where the firm has limited experience.
• Identifying standard protective clauses in a specific transaction type.
• Compliance checklists for regulatory filings.

Statutory and regulatory text

CoCounsel can retrieve current statutory text with amendment history and point to pending legislative changes (US Congress and select state legislatures).

Usage patterns

Pattern 1 — Research memo on a novel point

User: "Run a CoCounsel research on whether DIFC Courts can enforce an ICC arbitral award 
       where the award debtor's assets are in mainland UAE"
→ Connector formats the query for CoCounsel
→ Returns: research memo + key cases + applicable provisions (DIFC Arbitration Law, 
  UAE Federal Arbitration Law, New York Convention status)
→ Associate reviews and cites in their submissions

Pattern 2 — Quick case law check before drafting

Before drafting a contractual limitation-of-liability clause for a US-governed SaaS agreement, use CoCounsel to retrieve the current state of enforceability in the relevant state (e.g., California's treatment of consequential damages waivers in B2B contracts).

Pattern 3 — Regulatory compliance baseline

For a MENA fintech company seeking US market entry: use CoCounsel to pull a Practical Law overview of US money services business licensing requirements before the in-house team proceeds with a gap analysis.

Jurisdictional scope — what CoCounsel covers well (and where it doesn't)

Jurisdiction	CoCounsel coverage	MENA relevance note
United States	Excellent (all federal + 50 states)	Essential for US-listed MENA companies or US-governed contracts
United Kingdom	Good (English + Welsh law)	Relevant for DIFC-seat arbitration; UK precedent persuasive in DIFC Courts
Canada, Australia	Good	Occasional relevance for common-law analysis by analogy
EU member states	Partial (via EUR-Lex integration)	Use [[connector-eur-lex]] for primary EU law; CoCounsel adds secondary analysis
France	Limited	Use [[connector-legifrance]] for French primary sources
UAE / KSA / Lebanon	Not covered	Use [[connector-legal-data-hunter]] for MENA primary sources
DIFC / ADGM	Not natively covered	DIFC/ADGM law draws on English common law — CoCounsel's UK materials are relevant by analogy

Permissions & safety

• No query logging by TR beyond standard usage analytics. Confirm with the firm's TR account manager that CoCounsel query content is not used for TR model training.
• Privilege caution. Query content may reveal privileged strategy. Use CoCounsel for legal-question framing only — do not include client identifiers, confidential facts, or deal terms in the query text sent to CoCounsel.
• Citation verification is mandatory. CoCounsel-generated citations must be KeyCite-verified before submission to any court or regulatory body. The assistant must remind the user of this at every research hand-off.
• No fabricated citations. If CoCounsel returns a result that appears to cite a case the user cannot verify in Westlaw, treat it as suspect and escalate for manual verification.

Failure modes

Failure	Cause	Resolution
License not found	User's account not enabled for CoCounsel	Direct user to TR account manager; do not attempt workaround
Query too vague	CoCounsel returns low-confidence results	Prompt user to reframe as a specific legal question with jurisdiction and time period
Research memo has conflicting authorities	Circuit split or unsettled law	Surface the split clearly; do not resolve on the assistant's behalf
Result is outdated	Statute amended after TR's last update	Flag with "verify current statutory text" note; cross-reference with [[connector-eur-lex]] or [[connector-legifrance]] as appropriate

Related skills

• [[connector-eur-lex]]
• [[connector-legifrance]]
• [[connector-sec-edgar]]
• [[connector-companies-house-uk]]
• [[connector-legal-data-hunter]]