⚖️ LegalTech

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┌─────────────────────────────────────────────────────────────┐
│                   Security Layer                             │
│         (SSO, RBAC, Encryption, Audit Logging)              │
└─────────────────────────────────────────────────────────────┘
                              │
┌─────────────────────────────▼───────────────────────────────┐
│                    API Gateway                               │
│              (Rate limiting, Authentication)                 │
└─────────────────────────────────────────────────────────────┘
                              │
        ┌─────────────────────┼─────────────────────┐
        │                     │                     │
┌───────▼───────┐   ┌─────────▼─────────┐   ┌───────▼───────┐
│  IP Portfolio │   │    AI Search      │   │   Document    │
│   Service     │   │    (RAG)          │   │   Analysis    │
└───────────────┘   └───────────────────┘   └───────────────┘
        │                     │                     │
        └─────────────────────┼─────────────────────┘
                              │
        ┌─────────────────────┼─────────────────────┐
        │                     │                     │
┌───────▼───────┐   ┌─────────▼─────────┐   ┌───────▼───────┐
│  PostgreSQL   │   │    PGVector       │   │   Audit Log   │
│  (Portfolio)  │   │  (Embeddings)     │   │   (Immutable) │
└───────────────┘   └───────────────────┘   └───────────────┘

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# Structure-aware document processing for legal content
class LegalDocumentProcessor:
    def chunk_patent(self, document: PatentDocument) -> list[Chunk]:
        chunks = []
        
        # Keep claims together (critical for patent analysis)
        for claim in document.claims:
            chunks.append(Chunk(
                content=claim.text,
                metadata={
                    "type": "claim",
                    "claim_number": claim.number,
                    "dependent_on": claim.dependencies,
                    "document_id": document.id
                }
            ))
        
        # Description with context window
        for section in document.description.sections:
            chunks.extend(self.chunk_with_overlap(
                section.text,
                chunk_size=1000,
                overlap=200,
                metadata={"type": "description", "section": section.name}
            ))
        
        # Citations as separate chunks for reference tracking
        for citation in document.citations:
            chunks.append(Chunk(
                content=f"Citation: {citation.text}",
                metadata={
                    "type": "citation",
                    "cited_doc": citation.reference,
                    "context": citation.surrounding_text
                }
            ))
        
        return chunks

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// thorough audit logging for legal compliance
@Aspect
@Component
public class LegalAuditAspect {
    
    @Around("@annotation(Audited)")
    public Object auditOperation(ProceedingJoinPoint jp) {
        AuditEntry entry = AuditEntry.builder()
            .timestamp(Instant.now())
            .user(SecurityContext.getCurrentUser())
            .operation(jp.getSignature().getName())
            .resource(extractResource(jp.getArgs()))
            .clientId(SecurityContext.getClientId())
            .ipAddress(RequestContext.getClientIP())
            .build();
        
        try {
            Object result = jp.proceed();
            entry.setStatus(AuditStatus.SUCCESS);
            return result;
        } catch (Exception e) {
            entry.setStatus(AuditStatus.FAILURE);
            entry.setError(e.getMessage());
            throw e;
        } finally {
            auditLog.append(entry);  // Immutable append
        }
    }
}