Plain-English Opportunity
Patent is dead. Market is alive.
Important framing: Day 1 usable means the original patent right is expired or no longer licensed, but builders still need to check newer related patents, trademarks, safety rules, and country specific status.
Here is a business you can build now because this patent barrier is gone:
- Symmetric/asymmetric encryption developer tools
- Secure email and messaging utilities
- Passwordless WebAuthn and key-pair login portals
- Enterprise encryption key-management software
- IoT secure handshake chips and firmwares
1. What Expired
The MIT-held patent on the Rivest-Shamir-Adleman (RSA) cryptographic system.
2. Why It Mattered
It restricted commercial software builders in the US from using secure public-key encryption, slowing the growth of ecommerce and secure web browsing.
3. What Changed After Expiration
RSA Security Inc. released the algorithm to the public domain in September 2000. This unlocked the rapid adoption of SSL/TLS certificate networks (like Let's Encrypt later) and secure online shopping.
4. What Can Be Built Day 1
- Custom encryption toolkits for developer workflows
- Local-first secure database managers using public-key schemes
- Encrypted chat servers and messaging plugins
- SSH certificate manager dashboards
- Authentication SDKs for zero-trust systems
5. Open Source Tools to Use
The open-source industry standard cryptography library.
6. Companies that Benefited
7. Similar Patents Expiring Soon
8. Domain Ideas
9. Buyer & User Segments
- Enterprise security admins
- App Developers
- Fintech SaaS teams
10. Risk Notes
Google Search Volume Momentum
Note: Search curves show search fomo index, representing global builder query volume shifts in the past 8 months.