Carmo Mancebo — Attorney at Law | Health Insurance, Insurance & Civil Law

About the Attorney

A Solid Career Focused on Litigation

Carmo Martins Mancebo Segundo has been practicing law since 2008, accumulating extensive experience in the technical analysis of judicial and administrative proceedings, with a consolidated track record in high-complexity, high-volume environments. The emphasis on strategic litigation is the most recent chapter of this career, built upon years of regular practice across a broad range of civil disputes.

His work is structured around document analysis, regulatory interpretation and the development of legal solutions in strategic contexts, with relevant experience in the insurance and health insurance sectors — including the conduct and technical review of claims, risk analysis, legal thesis structuring and standardization of procedural filings. He also holds extensive knowledge across multiple areas of civil law (private and commercial), covering contractual, obligations, civil liability, corporate and family law disputes.

He has solid command of Brazilian regulatory legislation — ANS normative resolutions, SUSEP rules, Consumer Protection Code, Civil Code and Code of Civil Procedure — and continuously tracks case law from the STJ and TJSP. His experience also includes legal controllership, team coordination and participation in administrative proceedings before regulatory bodies and professional councils.

Drawing on this practical experience, he developed the Iuris Dicere — an AI-powered tool that automates the regulatory framework of procedural filings, making legal work more precise, agile and consistent.

Career Timeline

Consolidated Experience

A career built across leading law firms in insurance and health insurance, handling high-complexity litigation for over 17 years.

2008

Law practice begins

Founded Mancebo Legal Consulting, handling multiple areas of law and developing independent technical expertise.

2014

Specialization

Postgraduate degree in Civil Procedural Law from Damásio Educacional (2012–2015). Law degree from Faculdade de Itapetininga (2003–2007).

2018

Insurance litigation

Practice at specialized insurance law firms — policy analysis, RCF (property, medmal, motor, life, travel, commercial) and mortgage-linked insurance.

2023

Health insurance

Strategic attorney and technical reviewer at firms specializing in health insurance, focused on high-complexity litigation.

Clients Served

For Companies and Individuals

Legal counsel and representation for companies across multiple sectors and for individuals — with technical depth in health insurance and insurance law, and broad coverage for civil and commercial disputes.

Companies & Institutions

Legal counsel and strategic defense of companies in medium and high-complexity judicial disputes — in-depth technical analysis, thesis structuring, standardization of procedural filings and technical review of legal submissions. Consolidated experience with health insurance operators and insurers, and open practice to companies in other sectors facing civil, contractual and commercial disputes.

Health Insurance Insurance Law Civil & Commercial Contracts Strategic Litigation

Individuals

Legal services for individuals in civil disputes — contracts, civil liability, family law and consumer relations — including health insurance and insurance matters, with the same technical depth applied to corporate litigation.

Civil Law Contracts Civil Liability Family Law Consumer Rights

Practice Areas

What I do in Practice

Broad civil law practice, with technical depth in regulated sectors such as health insurance and insurance, covering contractual, commercial and civil liability disputes across other sectors.

Health Insurance

Litigation involving health plans — benefit coverage, ANS procedure lists, premium increases, policy terminations and high-complexity claims. Consolidated experience in the defense of health plan operators and representation of beneficiaries.

Insurance Law

Analysis of policies and disputes involving life, health, civil liability, property and mortgage insurance — with experience across multiple lines of facultative civil liability (RCF) and housing finance-linked insurance.

Civil Law

Practice in various civil disputes — obligations, possession and property, debt collection, contract revision and other conflicts governed by the Civil Code. Command of legislation and case law from state courts and the Superior Court of Justice.

Commercial Law

Legal support to companies in corporate conflicts, contractual breach, credit recovery and commercial disputes. Technical analysis focused on protecting business interests and minimizing legal risk.

Contract Law

Review, interpretation and judicial challenge of civil and commercial contracts — services, supply, leasing, financing and other instruments of obligation. Practice in the prevention and resolution of contractual disputes.

Civil Liability

Claims for material, moral and aesthetic damages — in consumer relations, contractual and extra-contractual situations. Analysis of causation, extent of damages and consolidated case law in state courts and the STJ.

Consumer Law

Disputes between consumers and suppliers — abusive practices, product or service defects, improper charges and liability for damages. Application of the Consumer Protection Code alongside civil law provisions.

Family Law

Guidance and representation in family matters — divorce, custody, child support, paternity recognition and asset division. Practice sensitive to the human aspects involved, focused on the most balanced outcome for all parties.

Strategic Legal Advisory

In-depth technical analysis of proceedings, review and standardization of procedural filings, structuring of legal theses and risk assessment. Support for law firms, legal departments and companies seeking technical consistency and strategic perspective.

The Product

Iuris Dicere with AI Expertise

Developed from real litigation practice, the Iuris Dicere produces procedural filings with automated regulatory foundation — defense responses, appeals, motions, submissions and objections.

Available to all legal professionals — attorneys, prosecutors, public defenders, advisors and interns. The tool interprets the procedural context, applies relevant legislation and structures the document with topics, grounds and claims across multiple areas of law.

Access the Generator ›

Iuris Dicere

// Mode: Defense Response · Area: Health Insurance

Type: Defense Response
Foundation: Regulatory + Contractual
Theses selected: 4 of 36
Model: Advanced

› Analyzing case context...
› Applying regulatory framework...
› Structuring topics and claims...

Document generated successfully
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Features

What the tool delivers

Resources for legal professionals who value technical depth, regulatory precision and procedural agility.

Complete procedural filings

Defense responses, appeals, motions, submissions and objections — technical structure with appropriate regulatory foundation for each document type.

36 Structured theses in 1 click

Ready-to-apply structured theses: coverage, ANS procedure list, contractual limits, medical prescription, payment disputes and much more.

7 Generation modes

Defense response, enforcement, injunction, appeals and other modes — each configured for the appropriate argumentative structure.

Anti-prompt injection detector

Identifies and neutralizes AI manipulation attempts via adversarial content in procedural documents.

Complete regulatory foundation

Regulatory legislation, Consumer Code, Civil Code, CPC and Constitution — precise references automatically selected by area and document type.

For all legal professionals

Attorneys, prosecutors, public defenders, advisors and interns — coverage across health insurance, civil, labor, criminal, tax, administrative, family law and more.

True mobility

Generate filings from your phone and receive them by email with a .docx attachment to finalize on your computer — ideal for urgent matters away from the office.

International Reach

Legal documents in 8 languages

Generate contracts and documents directly in the target language, or translate procedural filings with one click — with precise legal terminology and preserved formal structure.

English

EN

Spanish

ES

Mandarin

ZH

French

FR

German

DE

Italian

IT

Arabic

AR · RTL

Japanese

JA

Judicial filings are always drafted in Portuguese (Art. 192, Brazilian Code of Civil Procedure) — translations are generated separately, on demand. Contracts and extrajudicial documents can be generated directly in the target language.

Access Plans

Choose the right plan

Start free with 25 AI queries. Upgrade to a paid plan at any time — directly through the app, no hassle.

Each AI interaction (document generated, case analysis, summary, second opinion, etc.) counts as 1 query. See details.

Demo

Free

No time limit — permanent access

25 AI queries per month
Maximum AI quality
Structured theses
No credit card required

Start free

Agile

R$ 47 /mo

150 AI queries per month
Maximum AI quality
Full structured theses
Case analysis

Subscribe — Agile

The tool that protects you and your clients — including from AI-based fraud

Generating legal documents with AI is not enough. It is essential to ensure that no opposing party's filing manipulates the system in their favor.

The Iuris Dicere was developed with multiple layers of protection against these and other AI manipulation techniques — active on all plans, without exception, from the Demo plan to the Advanced plan.

Why this is urgent: AI manipulation attacks embedded in procedural documents are already being used in real cases. Attorneys who fail to identify this type of threat are exposed to serious disciplinary and procedural risks.

Attack techniques attorneys need to know

How the opposing party can manipulate AI systems

Prompt Injection

Hidden commands embedded in procedural filings that instruct the AI to ignore system guidelines and act in favor of the attacker.

Invisible Text

Instructions written with the same color as the background, zero-size font or special Unicode characters. The human reader sees nothing. The AI reads everything.

Payload Splitting

Instructions fragmented throughout the document that only form a complete command when processed together by the AI.

Comparative Undermining Attack

Selective emphasis only on case law favorable to the opposing thesis, omitting contrary precedents — presented with the appearance of balanced analysis. The most difficult attack to detect because it looks like legitimate legal argumentation.

Jailbreaking

Creating an alter ego within the AI that bypasses the system's security filters, causing it to act outside the developer's defined parameters.

19

active protection layers
on all plans — from Demo to Advanced

Against text attacks

Prompt Hijacking — "ignore everything said before" command
Prompt Override in Portuguese and English
Jailbreaking and AI role redefinition
Direct instruction to the AI identified in the document
Instruction for superficial defense response
Instruction not to challenge documents
Prompt Leaking — extraction of internal system instructions
DAN / alter ego jailbreak
Comparative Undermining Attack — deliberately selective case law

Against hidden attacks

Invisible text (white text on white background, zero-size font)
Unicode control and zero-width characters
Hidden bidirectional characters
Payload Splitting — instruction fragmented throughout the document
Multimodal attack — command embedded in image or diagram
Automatic sanitization of text extracted from PDFs and DOCX files

Access security & integrity

Real authentication via JWT
Single session per user — simultaneous access terminates the previous session
API keys exclusively on the server — never exposed in the browser
Honeypot and anti-bot rate limiting on registration

Output integrity

Anti-hallucination protocol for case law
Whitelist of verified precedents
Markers for references requiring verification
Alert on injection detection — with reference to Article 80 of the Brazilian CPC

Legal Notice

The insertion of hidden instructions in procedural filings constitutes bad faith litigation under Article 80 of the Brazilian Code of Civil Procedure, subjecting the responsible party to a fine of up to 10% of the claim value and referral to the OAB State Council. The system detects these attempts.

Start now. The Demo plan is free.

25 AI consultations per month with maximum quality, all 19 active protections — no credit card required.
Agile (150 consultations/month) and Advanced (300 consultations/month) plans available.

Create free account ›

Contact

Get in touch

For inquiries, scheduling or questions about the tool, please reach out through the channels below. Services are provided remotely throughout Brazil and for international clients.

carmo.mancebo@adv.oabsp.org.br
linkedin.com/in/carmoadvogado
Remote services throughout Brazil
International clients welcome

WhatsApp Schedule a meeting

Testimonials

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Carmo Mancebo | Attorney at Law