Actionable advice, predictable prices, and startup sensibility for founders and creators making their mark on the digital frontier
Pragmatic compliance with global privacy laws and regulations
Risk management for advertising, biometrics, personalization / profiling, surveillance, and automated decisionmaking issues
Scalable playbooks and documentation (privacy policies, impact assessments, records of processing, privacy-by-design)
Data licensing agreements, DPAs, vendor due diligence & management
Holistic AI governance, transparency, and safety frameworks
Product counseling for model training / development, AI-powered products, and agentic services
Risk assessment and mitigation for artificially generated / synthetic content
Trust and safety, content moderation, minors’ protections
Cryptocurrency and web3 regulatory requirements
Managing risks and threats from AI tools and workflows
Open source licensing (Apache, GPL, MIT, etc.)
EULAs / Terms of Service
Copyright registration; trademark clearance and filing
Work-for-hire agreements, licensing and publishing contracts
Cease-and-desist letters
Takedown notices
Business formation documents
Agreements for agency representation
Brand marketing, sponsorships, and promotions
Collaboration, services, and employment agreements
Non-disclosure / confidentiality agreements (NDAs)
— Sarah J.R. Guerrero, Founder & Principal
Hi — I’m Sarah. I’ve spent my career advising product teams and building legal programs at industry-leading technology companies. I started Sigil Law to help innovative startups and indie creatives compete with corporate conglomerates and build a more expansive future for all creators.
Looking for legal help, or think we should chat? Drop me an email, schedule a meeting, or find me on LinkedIn.