Invalidity for Indefinite Claim Words in Granted Patent
Invalidity for Indefinite Claim Words in Granted Patent – The U.S. Court of Appeals for the Federal Circuit has handed a decisive victory to internet infrastructure giant Akamai Technologies, Inc., affirming a lower court’s ruling that invalidated key portions of rival Media Pointe’s content-delivery patents and dismissing remaining Patent infringement claims.
The decision, issued on November 25, 2025, underscores the strict boundaries patent applicants face when using subjective words of degree like “optimal” or “best” without providing rigid, mathematical guidelines in their specifications.
Case Overview & Commercial Stakes
- The dispute centered on U.S. Patent Nos. 8,559,426 and 9,426,195, held by AMHC, Inc. and its subsidiary MediaPointe. The patents describe an “intelligent distribution network” intended to optimize the routing of streamed media across the internet to mitigate bandwidth constraints and packet loss.
- Akamai initiated the litigation in the Central District of California, seeking a declaratory judgment of noninfringement. MediaPointe aggressively counterclaimed for patent infringement, setting up a high-stakes battle over foundational content delivery network (CDN) routing architecture.
The Legal Brief & Key Rulings
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Definiteness: The Danger of Subjective Terms of Degree
The Federal Circuit focused heavily on 35 U.S.C. § 112(b), affirming that all independent claims in the ’426 patent and multiple claims in the ’195 patent were invalid for indefiniteness.
- The Problem: The invalidated claims required systems to determine “best,” “best situated,” or “optimal” network routes or nodes.
- The Core Legal Principle: Patent claims must inform those skilled in the art about the scope of the invention with “reasonable certainty”.
- The Court’s Reasoning: MediaPointe argued that “optimal” was anchored in objective data gathered by network trace routes (such as latency, network hops, and reliability). However, the court observed that the patent specification provided no formula or protocol on how to balance these metrics when they conflicted—such as when a route had fewer network hops but higher latency. Because a competitor could not reliably predict what constitutes a “best” route under the patent text, the claims were ruled legally un-enforceable.
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Noninfringement: System Architecture Dictates Reality
For the narrow selection of claims that survived the indefiniteness challenge, the court affirmed summary judgment of noninfringement based on the structural reality of modern internet requests.
- The Patent Requirement: The surviving claims required a “management center” to receive an initial request for media content from a client.
- The Accused Infringement: MediaPointe contended that Akamai’s traffic management component (“Mapper”) fulfilled this role when it received a user’s initial DNS query after a web address was entered.
- The Court’s Reasoning: The court ruled that a DNS query is legally and technically not a “request for media content”. Expert testimony proved that a DNS query only transmits domain names to discover an IP address; it has no concept of what specific video or media file the user wants to stream. The actual media request occurs via a subsequent, separate HTTP request sent directly to an edge server, completely bypassing the Mapper. Because Akamai’s routing hub never receives a request for the content itself, it cannot infringe.
Industry Takeaways
- Strict Drafting Standards: This case serves as a warning for tech sector IP counsel. Using terms of degree (optimal, maximize, efficient) without outlining explicit mathematical parameters or precise hierarchical logic risks full claim invalidation during litigation.
- Architecture Matters: For cloud and CDN providers, noninfringement defenses heavily rely on the granular mechanics of protocol handshakes. Disconnects between localized routing lookup protocols (DNS) and application-layer data requests (HTTP) remain a robust shield against overbroad infrastructure patent assertions.
Case Citation: Akamai Technologies, Inc. v. MediaPointe, Inc., No. 2024-1571 (Fed. Cir. Nov. 25, 2025). Appeal from the U.S. District Court for the Central District of California, Judge Mark C. Scarsi.
Source: USPTO, WIPO, Calcutta High Court, IPINDIA, Bombay High Court, Delhi High Court, Swarupa Ghosh Law Chamber.