Background
Golden Hour Data Systems held patents claiming methods for collecting, transmitting, and analyzing air ambulance medical transport data — systems that linked pre-hospital care data collected during emergency air transport with hospital records, enabling quality-of-care analysis and billing management. Golden Hour sued emsCharts and Softtech, two companies whose software was used by air ambulance services, arguing that together the two companies’ systems implemented all the steps of Golden Hour’s patented methods.
The problem was that neither emsCharts nor Softtech individually performed all steps of the claimed methods — their respective systems each handled different portions of the overall workflow, with the complete method being performed only when both systems were used together by an air ambulance service operator. Golden Hour argued that the two defendants were jointly liable for the combined infringement. The district court disagreed, finding no infringement because neither defendant individually performed all steps.
The Court’s Holding
The Federal Circuit affirmed. The court applied the controlling standard for joint infringement of method claims: direct infringement of a method claim requires that a single party perform all steps of the claimed method, or that one party be responsible for the performance of all steps by directing or controlling the performance of the remaining steps by another party. Control or direction requires more than mere instruction or facilitation — it requires that the controlling party have an agency relationship with or exercise actual control over the acts of the performing party.
In Golden Hour, emsCharts and Softtech were independent companies that did not control each other. They had no agency relationship, no contractual obligation to use each other’s systems, and neither one directed or controlled the activities of the other. The fact that a customer using both systems together could practice all the method steps did not make either company a direct infringer — the customer might have a direct infringement exposure, but neither defendant company did. Without a controlling party-controlled party relationship, joint infringement liability could not be established.
Key Takeaways
- Direct infringement of a method claim requires that a single party perform all claimed steps, or that one party direct or control the performance of the remaining steps by a second party — independent parallel action by two unaffiliated parties does not constitute joint direct infringement.
- Control or direction for joint infringement purposes requires agency, contractual control, or other meaningful exercise of authority — mere facilitation or independent parallel use of compatible products is insufficient.
- Patent prosecutors drafting method claims should consider how each step will be performed and by whom — claims requiring steps performed by multiple independent actors create divided infringement risks that can make the claims unenforceable against the commercial parties most easily sued.
- The Federal Circuit subsequently addressed joint infringement en banc in Akamai v. Limelight (2012), where it expanded the liability standard somewhat — but the core requirement that one party direct or control the performance of the uncompleted steps remained the governing framework.
Why It Matters
Golden Hour v. emsCharts highlighted a growing vulnerability in software and internet service patents: because complex digital systems are often built from components supplied by multiple independent vendors, a patent owner whose claims require steps performed by more than one party may find it impossible to sue any single defendant for direct infringement. This was one of the most significant loopholes in patent law affecting technology patents in the 2000s.
The decision contributed to the body of law that eventually prompted the Federal Circuit’s en banc Akamai v. Limelight decision (2012), which addressed the joint infringement problem more comprehensively and expanded the circumstances under which induced infringement could reach distributed method performance. For patent drafters, the lessons of Golden Hour remain essential: method claims in software and networked systems should be drafted so that a single identifiable party performs all steps, or should include apparatus claims capturing the system as a whole.