Torus Ventures LLC v. Ethos Tech Inc

I. Executive Summary and Procedural Information

• Parties & Counsel:
  • Plaintiff: Torus Ventures LLC (Delaware)
  • Defendant: Ethos Technologies Inc. (Delaware)
  • Plaintiff's Counsel: Rabicoff Law LLC
• Case Identification: 7:26-cv-00352, W.D. Tex., 09/04/2026
• Venue Allegations: Venue is alleged to be proper based on Defendant maintaining an established place of business in Austin, Texas, within the district.
• Core Dispute: Plaintiff alleges that Defendant's unspecified products or services infringe a patent related to a recursive security protocol for digital copyright control.
• Technical Context: The technology concerns digital rights management (DRM), employing a layered encryption method to protect digital content from unauthorized use and distribution.
• Key Procedural History: The patent-in-suit is a continuation of an earlier patent application and claims priority to a provisional application filed in 2002.

Case Timeline

Date	Event
2002-06-20	'968 Patent Priority Date
2007-02-23	'968 Patent Application Filing Date
2008-11-25	'968 Patent Issue Date
2026-09-04	Complaint Filing Date

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

U.S. Patent No. 7,457,968 - "Method and system for a recursive security protocol for digital copyright control"

• Patent Identification: U.S. Patent No. 7,457,968, titled "Method and system for a recursive security protocol for digital copyright control," issued on November 25, 2008.

The Invention Explained

• Problem Addressed: The patent's background describes the challenge that the ease of creating perfect digital copies poses to traditional copyright enforcement, which historically relied on the difficulty and cost of physical reproduction Compl. ¶9 '968 Patent, col. 1:41-50 It also notes that prior art security systems made "artificial distinctions between the various types of bit streams to be protected" (e.g., text, photo, or executable code) '968 Patent, col. 2:40-45
• The Patented Solution: The invention proposes a "recursive" security protocol that treats all forms of digital content as a generic "bitstream" '968 Patent, col. 2:51-54 The core concept involves a layered or nested encryption scheme. A first bitstream containing digital content is encrypted and then associated with a first decryption algorithm; this resulting combination is then encrypted again to yield a second bitstream, which is associated with a second decryption algorithm '968 Patent, abstract '968 Patent, col. 3:5-10 This self-referential nature allows the protocol to secure not only media content but also the security protocol itself, enabling secure updates over time '968 Patent, col. 2:56-60
• Technical Importance: The described technical approach aimed to provide a flexible and upgradable digital rights management (DRM) framework that was not dependent on the type of content being protected and could evolve to counter new security threats.

Key Claims at a Glance

• The complaint does not identify the specific claims being asserted, referring only to "Exemplary '968 Patent Claims" in an un-provided exhibit Compl. ¶11 Compl. ¶13 Independent claim 1 is analyzed here as a representative method claim.
• Independent Claim 1 requires, in summary:
  • obtaining a first decryption algorithm from a first bit stream;
  • decrypting the remainder of the first bit stream using the first decryption algorithm to yield a first decrypted bit stream;
  • obtaining a second decryption algorithm from the first decrypted bit stream; and
  • decrypting the remainder of the second bit stream using the second decryption algorithm obtained from the second bit stream to yield a second decrypted bit stream.
• The complaint does not explicitly reserve the right to assert dependent claims, but infringement of "one or more claims" is alleged Compl. ¶11

III. The Accused Instrumentality

Product Identification

• The complaint does not specifically name any accused products or services. It refers to them as the "Exemplary Defendant Products" identified in charts within "Exhibit 2" Compl. ¶11 Compl. ¶13 This exhibit was not provided with the complaint.

Functionality and Market Context

• The complaint does not provide sufficient detail for analysis of the functionality or market context of the accused instrumentalities. It alleges only that the products "practice the technology claimed by the '968 Patent" Compl. ¶13

IV. Analysis of Infringement Allegations

The complaint incorporates by reference claim charts in an exhibit that was not provided with the complaint Compl. ¶¶13-14 The body of the complaint does not contain sufficient technical detail to populate a claim chart or to analyze the infringement allegations on an element-by-element basis. The complaint makes only general allegations that the "Exemplary Defendant Products" satisfy all elements of the asserted claims Compl. ¶13

No probative visual evidence provided in complaint.

• Identified Points of Contention:
  • Evidentiary Question: As the complaint lacks specific factual allegations mapping product features to claim elements, a primary point of contention will be whether the Plaintiff can produce sufficient evidence to demonstrate that Defendant's unspecified products perform each step of the claimed recursive decryption method.
  • Claim Scope Question: A significant dispute may arise from the language of the asserted claims themselves. For example, the final step of Claim 1 requires "decrypting the remainder of the second bit stream... utilizing the second decryption algorithm obtained from the second bit stream" '968 Patent, col. 29:8-12 This language suggests a circular dependency, where an algorithm must be obtained from the very data it is needed to decrypt. This raises the question of whether this language is amenable to a logical construction that can be proven to be met by the accused products, or if it presents an insurmountable hurdle for proving infringement or even raises an issue of indefiniteness under 35 U.S.C. § 112.

V. Key Claim Terms for Construction

• The Term: "obtaining a ... decryption algorithm from a ... bit stream"

• Context and Importance: This phrase appears in the first and third steps of claim 1 and is fundamental to the patent's layered decryption architecture '968 Patent, col. 29:1-7 The construction of this term will define the required relationship between a data stream and its corresponding decryption method, which will be critical to the infringement analysis.

• Intrinsic Evidence for Interpretation:

  • Evidence for a Broader Interpretation: The patent specification describes the invention in general terms, which may support a construction where "obtaining from" includes indirect methods, such as reading a pointer or identifier within the bitstream that directs the system to an algorithm stored elsewhere. The patent's goal of flexibility could support an interpretation that is not limited to physical embedding.
  • Evidence for a Narrower Interpretation: The phrase "obtaining... from" could be argued to require that the decryption algorithm's code is directly contained within and extracted from the bitstream itself. The patent abstract states a decryption algorithm is "associated with" the encrypted stream, while the claim language uses the more direct "obtaining from," which may suggest a more limited scope '968 Patent, abstract '968 Patent, col. 29:1-7

• The Term: "recursive security protocol"

• Context and Importance: This term, found in the patent's title and background, frames the invention's core novelty '968 Patent, title '968 Patent, col. 2:59-60 Practitioners may focus on this term because Defendant could argue its system, even if using layered encryption, does not meet the specific "self-referencing" and "self-securing" properties the patent ascribes to a "recursive" protocol.

• Intrinsic Evidence for Interpretation:

  • Evidence for a Broader Interpretation: A broader view could define "recursive" as any multi-layered security process where one layer encapsulates another, consistent with the general description of the invention '968 Patent, abstract
  • Evidence for a Narrower Interpretation: The specification explicitly defines "recursion" as a "self-referencing behavior" where the "protocol would be equally capable of securing itself" '968 Patent, col. 2:56-60 It further explains that this allows the protocol to be updated by being "subsumed" as part of a newer security system '968 Patent, col. 4:45-50 A court might be persuaded to limit the term to protocols that demonstrate this specific capability for secure self-updates.

VI. Other Allegations

• Indirect Infringement: The complaint does not allege indirect or contributory infringement. The single count is for "Direct Infringement" Compl. ¶11
• Willful Infringement: The complaint contains no factual allegations to support a claim for willful infringement, such as pre-suit knowledge of the '968 Patent. While the prayer for relief requests a finding that the case is "exceptional" for the purpose of attorney fees, this is not supported by corresponding factual assertions in the body of the complaint Compl. p. 4

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

The disposition of this case may turn on the resolution of two central questions:

1. An evidentiary question of technical operation: Can the Plaintiff, despite the bare-bones nature of its complaint, produce discovery-derived evidence that clearly demonstrates the accused products perform the specific, two-stage nested decryption process as recited in the patent's claims?

2. A legal question of claim clarity and scope: Will the court determine that the claim language requiring a decryption algorithm to be "obtained from the... bit stream" it is meant to decrypt is nonsensically circular and thus indefinite, or can the term be construed in a manner that is both logically sound and covers the functionality of the accused products?