How to Draft a Legal Complaint: Structure, Content, and Common Mistakes
Learn how to draft a legal complaint per Art. 399 LEC: structure, legal grounds, petition, documents, and mistakes to avoid.
How to Draft a Legal Complaint: Complete Guide
The legal complaint is the cornerstone of any civil proceeding. A well-drafted complaint makes the difference between winning and losing a case. This guide analyzes each element under Art. 399 LEC with practical examples and common mistakes.
1. Legal Requirements (Art. 399 LEC)
Essential elements: party identification, numbered facts, legal grounds, petition (suplico), and supporting documents. Art. 264 LEC requires procedural documents; Art. 265 LEC requires substantive documents.
2. Complaint Structure
Header: court, procedure type, lawyer and court agent, full plaintiff and defendant identification. Facts: numbered consecutively, chronologically ordered, clear and concise, linked to evidence. Legal grounds: Block I (procedural: jurisdiction, standing, procedure type) and Block II (substantive: applicable law, case law). Petition (petitum): determines what the judge can grant (congruence principle, Art. 218 LEC). Must be clear, numbered, with exact amounts, and request costs.
3. Required Documents
Procedural (Art. 264 LEC): power of attorney, prior conciliation certificate, representation documents. Substantive (Art. 265 LEC): all documents supporting the claim. Preclusion rule (Art. 269 LEC): documents not filed with the complaint admitted only exceptionally.
4. The 10 Most Common Errors
- Lack of standing ( 2. Wrong territorial jurisdiction ) 3. Disordered facts ( 4. Insufficient legal grounds ) 5. Imprecise petition ( 6. Incomplete documents ) 7. Not exhausting prior remedies ( 8. Defendant identification errors ) 9. Forgetting court fees, 10. Not signing electronically (LexNET)
5. Ordinary vs. Verbal Proceedings
| Aspect | Ordinary (>€6,000) | Verbal (≤€6,000) |
|---|---|---|
| Answer | 20 business days | 10 business days |
| Counterclaim | Always permitted | Only if connected |
| Preliminary hearing | Yes | No (direct hearing) |
How Lexiel Improves Complaint Drafting
Lexiel provides: automatic structure by procedure type, legal grounds with CENDOJ-verified case law, citation verification against BOE, error detection (inconsistent petitions, standing issues, jurisdiction errors), and LexNET-compatible export.
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