  In recent years, the countries of the world have drafted the specifications
of connected cars; for instance, the Security Credential Management System
(SCMS) has been proposed by United States Department of Transportation (USDOT),
and the Cooperative Intelligent Transportation System (C-ITS) Credential
Management System (CCMS) has been proposed by European Union (EU). Therefore,
several companies have developed the technology and productions of connected
cars based on specifications, and connected car patent portfolios have been
proactively performed. Therefore, this study uses Patent Search System (PSS) to
find and analyze the contents of patents for obtaining the innovation reports
of connected cars according to patents. This study considers the single-factor
and two-factors to analyze the relationships of annuals, major technology
leaders, major market leaders, and major technology and applications for
exploring the patent portfolios of technology leaders and market leaders in
connected cars.
