SEALSQ Corp filed a new patent on April 28 2026 that protects polynomial‑based post‑quantum algorithms, specifically targeting the ML‑KEM/Kyber family. The patent covers a method that hardens hardware implementations at the message‑encoding stage, shielding key material from power‑consumption, electromagnetic, and timing attacks.
The filing comes as the company’s QS7001 Quantum Shield secure element enters the sampling phase. QS7001 embeds the same NIST‑approved algorithms—ML‑KEM/Kyber and ML‑DSA/Dilithium—directly in silicon, providing a tamper‑resistant root of trust for secure boot, device authentication, TLS handshakes, and certificate management.
The new intellectual property expands SEALSQ’s portfolio to 126 active patents and supports its strategy of delivering a vertically integrated trust architecture that combines hardware, software, and cloud services. The patent is a key component of the company’s plan to address the subtle vulnerabilities that can arise even in mathematically robust post‑quantum schemes.
The filing aligns with Google’s announced 2029 migration deadline for post‑quantum cryptography, positioning SEALSQ to serve OEMs preparing for that transition. The company’s Q1 2026 revenue rose to $4.1 million, a 200 % increase from $1.3 million in Q1 2025, and it reaffirmed its FY 2026 guidance of 50 %–100 % year‑over‑year growth. SEALSQ also reported a cash balance of over $525 million as of March 31 2026, giving it ample runway to invest in product development and IP.
Analysts view the patent filing as a strategic move that strengthens SEALSQ’s competitive position in the rapidly growing post‑quantum security market, projected to reach nearly $10 billion by 2028. The company’s focus on side‑channel protection addresses a critical gap in the market and could open licensing opportunities for other vendors seeking robust PQC implementations.
Overall, the patent filing represents a significant operational milestone that reinforces SEALSQ’s leadership in post‑quantum security and supports its broader growth strategy.
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