Stop re-typing the same client information.
FernLex fills legal forms using data you already have on file — client details, case facts, and documents — so your team reviews and signs off instead of re-entering data.
Simulated example — confidence, validation and mapping badges are illustrative.
From information to completed form.
FernLex turns case data into validated, reviewable forms through a six-stage pipeline.
Step 1
Case Data
FernLex reads from client profiles, case files, intake forms, and uploaded documents.
Client profile, matter details, intake answers, uploaded documents.
Not just filling. Intelligent preparation.
FernLex understands PDF structure, maps data intelligently, and validates every field before your team reviews it.
PDF & Digital Forms
Works with both fillable PDFs and scanned documents that need overlay.
- Fillable PDF fields
- Scanned form overlay
- Mixed form types
- Static PDF support
90+ Form Types
USCIS, IRS, federal courts, state courts, bankruptcy, copyright, and USPTO forms.
- 11 USCIS forms
- 5 IRS forms
- 73 state court forms
- 5 copyright/USPTO forms
Version Tracking
Detects when form versions change and flags fields that need re-mapping.
- Automatic version detection
- Stale field alerts
- Mapping history
- Legacy support
AI-Assisted Fill
FernLex reads form context and case details to resolve fields it can't match automatically.
- Context-aware fill
- Confidence scoring
- Verification pass
- Source tracking
Confidence Scoring
Every field gets a confidence score so your team knows what to double-check.
- Source reliability
- Usage history
- Recency tracking
- Verification bonus
Full Audit Trail
See where every value came from, who verified it, and when it was last used.
- Value origin tracking
- Override history
- Batch recording
- Provenance queries
FernLex in action.
See how FernLex handles form filling for different legal workflows.
Fields matched instantly from case data — no AI needed.
Put the right information in the right field.
90+ semantic mapping paths connect case data to form fields — with confidence scores and source attribution.
client.firstName
Family Name
Bennett
client.lastName
Given Name
Sarah
client.dob
Date of Birth
04/12/1988
client.countryOfBirth
Country of Birth
Jordan
client.address
Mailing Address
1420 Market St, San Francisco, CA 94103
Missing
Alien Registration Number
Missing
Documents can provide the answers.
Upload a passport, birth certificate, or marriage certificate. FernLex extracts and maps the data.
Passport.pdf
4 fields extracted
Birth Certificate.pdf
4 fields extracted
Marriage Certificate.pdf
4 fields extracted
Don't just fill the form. Check it.
FernLex validates every field — flagging missing information, conflicting data, and format issues.
Family Name
Required field completed
Given Name
Required field completed
Date of Birth
Date format valid (MM/DD/YYYY)
Country of Birth
Normalized to standard country name
Mailing Address
Address format verified
Alien Registration Number
Required field not found in case records
Date of Marriage
Conflicting dates in intake form vs. case record
Petitioner Citizenship
Verified against petitioner profile
AI prepares. You decide.
FernLex is not a filing service. Every form goes through your team before it goes anywhere else.
FernLex populates the form from case data and documents
Your team reviews every field and its source
Edit, override, or approve each value
Submit the completed form on your terms
40
Populated
1
Review
1
Missing
Family Name
Bennett
Given Name
Sarah
Date of Birth
04/12/1988
Date of Marriage
06/15/2019
Alien Registration Number
—
Enter information once. Use it everywhere.
One client record flows into every form that needs it. No re-typing across multiple filings.
Sarah Bennett
Single client record — reusable across all forms
Petition for Alien Relative
40/42 fields populated
Application to Register Permanent Residence
72/78 fields populated
Application for Employment Authorization
34/34 fields populated
Affidavit of Support
58/62 fields populated
Every form filled from matter data, every submission reviewed by your team.
FernLex auto-fills court and USCIS forms using client details, case facts, and documents already on file — so your team reviews and signs off instead of re-entering data.