Valtrus Innovations Ltd v. 365 Data Centers Holdings LLC

I. Executive Summary and Procedural Information

• Parties & Counsel:
  • Plaintiff: Valtrus Innovations Ltd. and Key Patent Innovations Ltd. (Ireland)
  • Defendant: 365 Data Centers Holdings, LLC; 365 Operating Company LLC; and 365 Data Center Services LLC (Delaware)
  • Plaintiff's Counsel: Findlay Craft, P.C.
• Case Identification: 3:26-cv-02755, N.D. Tex., 08/18/2026
• Venue Allegations: Venue is based on Defendants having a regular and established place of business in the Northern District of Texas, specifically a data center facility located in Richardson, Texas.
• Core Dispute: Plaintiff alleges that Defendants' methods of operating and cooling their colocation data centers infringe three expired patents related to data center energy management and environmental control.
• Technical Context: The patents address methods for efficiently cooling data centers, a critical operational challenge involving significant energy consumption and cost.
• Key Procedural History: The asserted patents, which originated with Hewlett Packard Enterprise, have all expired, meaning this case concerns only past damages. The complaint states that Plaintiff notified Defendants of the alleged infringement via a letter on January 9, 2025, which included claim charts and an offer to license, but the parties failed to reach an agreement. The complaint also notes a prior representation made in the Eastern District of Texas that Plaintiff would not assert the '287 Patent against customers of Vertiv, a cooling equipment supplier.

Case Timeline

Date	Event
2002-04-17	U.S. Patent No. 6,718,277 Priority Date
2002-08-02	U.S. Patent No. 6,854,287 Priority Date
2003-01-16	U.S. Patent No. 6,868,682 Priority Date
2004-04-06	U.S. Patent No. 6,718,277 Issued
2005-02-15	U.S. Patent No. 6,854,287 Issued
2005-03-22	U.S. Patent No. 6,868,682 Issued
2014-03-XX	Defendant allegedly began using 365 Data Center trademark for advertising data centers
2025-01-09	Plaintiff sent notice letter to Defendant regarding alleged infringement
2026-08-18	Complaint Filed

II. Technology and Patent(s)-in-Suit Analysis

U.S. Patent No. 6,854,287 - "Cooling System", issued February 15, 2005

The Invention Explained

• Problem Addressed: The patent's background describes the inefficiency of conventional data center cooling systems, which often operate at or near maximum capacity regardless of the actual, fluctuating heat loads of the computer equipment, leading to significant energy waste ʼ287 Patent, col. 1:24-40
• The Patented Solution: The invention proposes a localized and responsive cooling method. The system employs multiple heat exchanger units (HEUs) positioned to cool specific computer racks ʼ287 Patent, Fig. 1 It senses temperatures within the room and, in response, controls not only the overall temperature of a primary cooling fluid but also "individually manipulat[es] a mass flow rate of the cooling fluid supplied to each" HEU ʼ287 Patent, col. 14:27-31 This allows for granular, demand-based cooling rather than uniform, brute-force cooling of the entire space ʼ287 Patent, abstract
• Technical Importance: This approach represented a shift toward more intelligent and energy-efficient data center thermal management by matching cooling resources to localized and time-varying thermal loads.

Key Claims at a Glance

• The complaint asserts independent claim 1 Compl. ¶30
• The essential elements of claim 1 include:
  • Providing a plurality of heat exchanger units (HEUs) in a room.
  • Supplying the HEUs with cooling fluid from an air conditioning unit.
  • Sensing temperatures at one or more locations in the room.
  • Controlling air delivery in response to the sensed temperatures.
  • Wherein the control step comprises "individually manipulating a mass flow rate of the cooling fluid supplied to each of the plurality of heat exchanger units." ʼ287 Patent, col. 13:21-14:31
• The complaint does not explicitly reserve the right to assert dependent claims.

U.S. Patent No. 6,868,682 - "Agent Based Control Method and System for Energy Management", issued March 22, 2005

The Invention Explained

• Problem Addressed: The patent addresses the need for a more sophisticated control system to manage data center cooling, as simple control loops are inadequate for complex, large-scale environments with non-uniform heat loads ʼ682 Patent, col. 1:21-41
• The Patented Solution: The invention discloses a hierarchical, "agent-based" control system ʼ682 Patent, Fig. 4 Distributed software "agents" manage different parts of the cooling infrastructure. A "first agent" (e.g., a "rack agent") monitors a subsystem and attempts to maintain temperature by making local adjustments. If unable to do so, it "request[s]" a "second agent" (e.g., a "row agent") in the hierarchy to process the data and potentially "redistribute" cooling resources. This escalation can continue up the hierarchy to a master cooling system agent ʼ682 Patent, abstract ʼ682 Patent, col. 3:1-14
• Technical Importance: This distributed intelligence framework enables a scalable and robust method for energy management, allowing for autonomous local control while providing a mechanism for coordinated, system-wide responses when necessary.

Key Claims at a Glance

• The complaint asserts independent claim 1 Compl. p. 8
• The essential elements of claim 1 include:
  • Receiving sensory data (temperature) from a subsystem.
  • Processing the data by a "first agent in a hierarchy of agents."
  • Adjusting a cooling fluid delivery rate via the first agent.
  • "requesting a second agent from the hierarchy of agents to process the sensory data" when the first agent cannot meet its temperature objectives alone. ʼ682 Patent, col. 18:27-53
• The complaint does not explicitly reserve the right to assert dependent claims.

Multi-Patent Capsule

• Patent Identification: U.S. Patent No. 6,718,277 ("Atmospheric Control Within a Building"), issued April 6, 2004 Compl. ¶13
• Technology Synopsis: This patent describes a method for controlling a data center's atmosphere by sensing parameters (e.g., temperature) at various locations to generate a real-time "empirical atmospheric map." This map is then compared to a "template atmospheric map" representing an ideal state. A controller then adjusts the cooling system to minimize the identified "pattern differentials" between the real-time and ideal maps ʼ277 Patent, abstract ʼ277 Patent, col. 6:56-65
• Asserted Claims: The complaint asserts independent claim 1 Compl. ¶36
• Accused Features: The complaint alleges Defendants' use of cooling equipment and software from suppliers such as Stulz, Schneider Electric, and others to perform the claimed methods of atmospheric control Compl. ¶36

III. The Accused Instrumentality

Product Identification

The accused instrumentalities are the "methods of cooling" performed by Defendants in their colocation data centers Compl. ¶20 Compl. ¶30 The complaint identifies specific cooling equipment from suppliers including Vertiv (Liebert), Stulz, Trane, and Schneider Electric as being used to perform these allegedly infringing methods Compl. ¶¶21-23

Functionality and Market Context

Defendants are alleged to own and operate 16 colocation data centers across the United States, providing cooled, powered space for customers' computer equipment Compl. ¶20 The complaint alleges that these data centers implement cooling equipment to perform the methods claimed in the asserted patents Compl. ¶20 As evidence, the complaint includes a block-quote from the Defendant's website for its Marlborough data center, which states the facility "features 780-tons of Liebert cooling on the raised floors" Compl. p. 5 Compl. ¶21 This allegation links the Defendants' operations to a specific brand of cooling equipment mentioned in the infringement allegations.

IV. Analysis of Infringement Allegations

The complaint alleges that Defendants' methods of cooling their data centers directly infringe at least claim 1 of the '287, '682, and '277 patents Compl. ¶30 Compl. ¶33 Compl. ¶36 However, the body of the complaint offers only conclusory allegations of infringement. For each asserted patent, the complaint states that it is attaching "Exemplary claim charts" as exhibits that detail the infringement Compl. ¶30 Compl. p. 8 Compl. ¶36 As these exhibits were not provided with the complaint document, a detailed element-by-element analysis based on the plaintiff's specific contentions is not possible. The narrative infringement theory is that Defendants' use of sophisticated cooling equipment and control software from various vendors necessarily results in the performance of the patented methods.

Identified Points of Contention

• '287 Patent: A central question will be factual: do the cooling systems in Defendants' data centers have the capability to "individually manipulat[e] a mass flow rate of the cooling fluid supplied to each" HEU or equivalent unit? The dispute will likely focus on whether Defendants' systems can achieve this level of granular control, as opposed to providing only zonal or global adjustments. Discovery into the technical specifications and operational logic of Defendants' cooling control systems will be critical.
• '682 Patent: The infringement analysis will likely turn on both claim construction and factual evidence. A key technical question is whether Defendants' control software architecture embodies the claimed "hierarchy of agents." This raises the question of whether the system contains discrete software components with different levels of authority that communicate and escalate control requests in the manner described by the patent, or if it operates as a more monolithic system with centralized control logic.

V. Key Claim Terms for Construction

'287 Patent: "individually manipulating a mass flow rate" (from Claim 1)

• Context and Importance: This phrase captures the essence of the claimed invention and distinguishes it from prior art systems that may have offered only uniform cooling. The outcome of the infringement analysis for the '287 patent will likely depend heavily on the court's construction of this term.
• Intrinsic Evidence for Interpretation:
  • Evidence for a Broader Interpretation: The specification discusses controlling the "output of the HEU" in general terms, which a party could argue supports a construction covering any method that results in different flow rates to different units, regardless of the specific control mechanism ʼ287 Patent, col. 3:55-59
  • Evidence for a Narrower Interpretation: The claim uses the specific word "individually," and the patent describes embodiments where HEUs are positioned to cool specific racks ʼ287 Patent, col. 4:55-62 A party could argue this supports a narrower construction requiring a dedicated control mechanism for each HEU or a system capable of independent, per-unit adjustment.

'682 Patent: "hierarchy of agents" (from Claim 1)

• Context and Importance: This term defines the fundamental architecture of the claimed control system. Whether Defendants' systems can be said to infringe will depend on whether their software architecture falls within the scope of this term. Practitioners may focus on this term because it appears to describe a specific, multi-level, distributed control structure.
• Intrinsic Evidence for Interpretation:
  • Evidence for a Broader Interpretation: The abstract describes the concept generally as a "first agent" that can "request[ ] a second agent" for assistance, which could be argued to cover any tiered control logic where local conditions trigger system-level responses ʼ682 Patent, abstract
  • Evidence for a Narrower Interpretation: The specification provides a detailed diagram (Fig. 4) and description of a specific three-tiered hierarchy of "Rack Agents," "Row Agents," and "CRAC Agents" that communicate and escalate requests ʼ682 Patent, Fig. 4 ʼ682 Patent, col. 13:15-44 A party could argue this context limits the term to systems that explicitly implement this type of distributed, multi-agent structure.

VI. Other Allegations

Indirect Infringement

The complaint does not plead specific facts to support claims of induced or contributory infringement.

Willful Infringement

The complaint seeks enhanced damages and attorneys' fees, suggesting a claim for willful infringement Compl. p. 9, ¶D The factual basis for this claim appears to be the allegation that Plaintiff provided Defendants with pre-suit notice of infringement on January 9, 2025, which included "claim charts demonstrating infringement" Compl. ¶25 Any continued infringement by Defendants after receiving this notice could be alleged to be willful.

VII. Analyst's Conclusion: Key Questions for the Case

This case, involving expired patents asserted against the ongoing operation of data centers, will likely center on two types of questions that require resolution by the court.

• A central evidentiary question will be one of technical implementation: As discovery proceeds, the key issue will be whether the Defendants' cooling systems, sourced from various third-party vendors, actually operate in the specific manner required by the patent claims. Does the hardware and software controlling the data center environment perform "individually manipulat[ing] a mass flow rate" ('287 patent) or utilize a "hierarchy of agents" ('682 patent)? The bare-bones nature of the complaint underscores that the case cannot proceed without a deep factual inquiry into the accused methods.
• A parallel claim construction question will be one of definitional scope: The viability of the infringement claims will depend on how broadly the court construes key limitations. Can the term "hierarchy of agents" be interpreted to cover any tiered control logic, or is it limited to the specific distributed software agent model described in the patent? The dispute will hinge on whether the patent language describes a general concept or a specific, narrow implementation.