U.S. Venture Partners

U.S. Venture Partners is a Menlo Park-based venture capital firm established in 1981 that concentrates on early-stage and growth investments in technology and healthcare. The firm backs business-to-business software, IT security, consumer internet, mobile, e-commerce, and IT-enabled healthcare services, as well as digital health, cloud technology, and life sciences including oncology. Its focus spans enterprise software, cybersecurity, healthcare IT, SaaS, manufacturing, and related sectors on the West Coast. The team comprises former entrepreneurs, technologists, executives, and industry experts who help portfolio companies scale and reach customers.

David Liddle

Partner and Co-Founder

Jonathan Root

General Partner

Dafina Toncheva

General Partner

Past deals in Central America

Arkose Labs

Series B in 2020
Arkose Labs develops an online fraud and abuse prevention platform that protects businesses in sectors such as online marketplaces, travel, banking, social media, ticketing, and online gaming. The platform defends consumer actions against account takeover, fake account abuse, scraping, spam, and gift‑card fraud. Founded in 2015, the company is headquartered in San Mateo, California, with offices in London, Costa Rica, and Brisbane. It is recognized as a leader in bot detection and mitigation, offering a $1 million warranty for credential‑stuffing and SMS toll fraud. Arkose Labs’ AI‑powered system combines global telemetry, dynamic threat response, and a bilateral feedback loop to validate suspicious traffic and train enforcement, reducing friction for legitimate users while authenticating identities across all customer touchpoints.

Arkose Labs

Series A in 2018
Arkose Labs develops an online fraud and abuse prevention platform that protects businesses in sectors such as online marketplaces, travel, banking, social media, ticketing, and online gaming. The platform defends consumer actions against account takeover, fake account abuse, scraping, spam, and gift‑card fraud. Founded in 2015, the company is headquartered in San Mateo, California, with offices in London, Costa Rica, and Brisbane. It is recognized as a leader in bot detection and mitigation, offering a $1 million warranty for credential‑stuffing and SMS toll fraud. Arkose Labs’ AI‑powered system combines global telemetry, dynamic threat response, and a bilateral feedback loop to validate suspicious traffic and train enforcement, reducing friction for legitimate users while authenticating identities across all customer touchpoints.
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