DCT

6:26-cv-06874

Malikie Innovations Ltd v. Foundry Digital LLC

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I. Executive Summary and Procedural Information

  • Parties & Counsel:
  • Case Identification: 6:26-cv-06874, W.D.N.Y., 08/28/2026
  • Venue Allegations: Venue is based on Defendant's principal place of business and corporate headquarters being located in Pittsford, New York, within the Western District of New York.
  • Core Dispute: Plaintiff alleges that Defendant's Bitcoin mining operations and related services, which rely on the Bitcoin protocol, infringe five patents related to elliptic curve cryptography, efficient modular reduction, and hash algorithm implementation.
  • Technical Context: The technology at issue is Elliptic Curve Cryptography (ECC) and related computational efficiencies, which are foundational security mechanisms for modern digital systems, including cryptocurrencies like Bitcoin.
  • Key Procedural History: The asserted patents originate from a portfolio developed by Certicom Corporation and later acquired by BlackBerry Ltd. The complaint alleges that the inventions were foundational to the development and optimization of the Bitcoin protocol. It also alleges Defendant had notice of its infringement of the patents-in-suit as of March and April 2025 but continued its accused activities.

Case Timeline

Date Event
2001-12-31 Priority Date for '062 Patent
2005-01-18 Priority Date for '827 and '197 Patents
2008-10-31 Satoshi Nakamoto's Bitcoin White Paper published
2009-01-08 First version of Bitcoin software released
2009-07-17 Priority Date for '286 Patent
2011-02-08 Hal Finney proposes using GLV Endomorphism to optimize Bitcoin
2011-04-06 Priority Date for '039 Patent
2013-09-10 '286 Patent Issued
2014-03-04 '062 Patent Issued
2014-04-29 '039 Patent Issued
2014-07-22 '827 Patent Issued
2014-08-12 '197 Patent Issued
2020-11-03 Foundry mines its first Bitcoin block
2025-03-28 Alleged notice of infringement for '827, '197, '062, '039 Patents
2025-04-11 Alleged notice of infringement for '286 Patent
2026-08-28 Complaint Filed

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

U.S. Patent No. 8,788,827 - "Accelerated Verification of Digital Signatures and Public Keys," issued July 22, 2014

The Invention Explained

  • Problem Addressed: The patent addresses the computational inefficiency of standard Elliptic Curve Digital Signature Algorithm (ECDSA) verification Compl. ¶62 Compl. ¶71 The verification process is described as taking significantly longer than the signing process because it requires two scalar multiplications (uG and vQ), which are time-consuming operations (Compl. ¶71, citing '827 Patent, Ex. 1 at 3:5-17).
  • The Patented Solution: The invention provides a method to accelerate signature verification by recovering the signer's public key (Q) directly from the components of the digital signature itself Compl. ¶74 This is achieved by computing Q using the formula Q = r⁻¹(sR-eG), where R is the ephemeral public key and r, s, and e are other components of the signature scheme (Compl. ¶74; Compl. ¶119, citing '827 Patent, Ex. 1 at 4:48-5:4). This technique avoids the need to transmit or separately retrieve the public key, thereby reducing bandwidth and storage requirements while speeding up verification Compl. ¶74
  • Technical Importance: This method of public key recovery offers a significant performance improvement in systems that rely on validating a high volume of digital signatures, such as nodes in a blockchain network.

Key Claims at a Glance

  • The complaint asserts at least independent claim 1 Compl. ¶121
  • Based on the complaint's description, the essential elements of claim 1 include:
    • Generating a public key (Q) of a signer of a digital signature.
    • The generation is performed by computing Q=r⁻¹(sR-eG).
    • Where G is a generator of an elliptic curve group that includes a first elliptic curve point R and a second elliptic curve point Q Compl. ¶119
  • The complaint does not explicitly reserve the right to assert dependent claims for this patent.

U.S. Patent No. 8,806,197 - "Accelerated Verification of Digital Signatures and Public Keys," issued August 12, 2014

The Invention Explained

  • Problem Addressed: Like the '827 Patent, this patent addresses the computational cost and time required for ECDSA signature verification Compl. ¶71 The inefficiency stems from the need to perform multiple resource-intensive scalar multiplication operations Compl. ¶71
  • The Patented Solution: The invention teaches an alternative method for accelerating signature verification by making the ephemeral public key (R) more easily recoverable Compl. ¶73 It involves generating, for use with the digital signature, an "indicator" (e.g., a single bit "i") that uniquely identifies which of several potential values recoverable from a signature component (r) is the correct ephemeral public key (R) Compl. ¶73 Compl. ¶124 This allows a verifier to quickly reconstruct R, which is a necessary step in the verification process, thereby accelerating the overall verification (Compl. ¶73, citing '197 Patent, Ex. 1 at 4:15-33).
  • Technical Importance: By simplifying the recovery of the ephemeral key, this technique provides a technological improvement that reduces the time required to validate digital signatures, a critical function in decentralized trust systems.

Key Claims at a Glance

  • The complaint asserts at least independent claim 1 Compl. ¶126
  • Based on the complaint's description, the essential elements of claim 1 include:
    • Generating a digital signature of a message, the signature having a first and second signature component.
    • The first signature component is based on a first coordinate of an elliptic curve point representing an ephemeral public key.
    • Generating an indicator to identify which of multiple values recoverable from the first signature component is the ephemeral public key Compl. ¶124
  • The complaint does not explicitly reserve the right to assert dependent claims for this patent.

Multi-Patent Capsule: U.S. Patent No. 8,666,062 ("Finite Field Engine")

  • Patent Identification: U.S. Patent No. 8,666,062, "Method and Apparatus for Performing Finite Field Calculations," issued March 4, 2014.
  • Technology Synopsis: The patent addresses the technological problem of inefficient software implementations of ECC, where finite field elements are often too large to be represented in a single machine word, requiring complex and slow multi-word operations Compl. ¶85 The patented solution provides for faster "finite field engines" by separating the finite field operation (e.g., multiplication) from the modular reduction, enabling the creation of efficient, specialized routines for specific finite fields without duplicating the bulk of the engine's code Compl. ¶87
  • Asserted Claims: At least claim 1 Compl. ¶131
  • Accused Features: The complaint alleges that Bitcoin mining equipment and wallets that comply with the Bitcoin protocol, which perform finite field operations, infringe the '062 Patent Compl. ¶131

Multi-Patent Capsule: U.S. Patent No. 8,532,286 ("Improved Modular Reduction")

  • Patent Identification: U.S. Patent No. 8,532,286, "System and Method for Reducing the Computation and Storage Requirements for a Montgomery-Style Reduction," issued September 10, 2013.
  • Technology Synopsis: The patent addresses the problem that classical modular arithmetic, a key step in cryptographic operations, is slow Compl. ¶92 The invention teaches an improved Montgomery-style reduction technique that uses a "modified reduction value" in place of the full modulus, which reduces the number of required multiplications and register storage Compl. ¶99 This provides a more efficient method, particularly for resource-constrained processors (Compl. ¶99, citing '286 Patent, Ex. 6 at 6:51-65).
  • Asserted Claims: At least claim 1 Compl. ¶135
  • Accused Features: The complaint alleges that Bitcoin mining equipment and wallets that comply with the Bitcoin protocol infringe the '286 Patent by performing Montgomery-style reductions Compl. ¶133 Compl. ¶135

Multi-Patent Capsule: U.S. Patent No. 8,712,039 ("Improved Hash Processing")

  • Patent Identification: U.S. Patent No. 8,712,039, "Efficient Implementation of Hash Algorithm on a Processor," issued April 29, 2014.
  • Technology Synopsis: The patent addresses the challenge of efficiently implementing secure hash algorithms (like the SHA-2 family used in Bitcoin) on processors with a limited number of registers, a process which normally requires many slow memory load operations Compl. ¶104 The patented solution is a method that "categoriz[es] and unroll[s]" hash iterations into "even" and "odd" loops and reverses the sequence of computations, which maximizes the reuse of values already in registers and reduces the average number of required word loads by at least half Compl. ¶105
  • Asserted Claims: At least claim 1 Compl. ¶140
  • Accused Features: The complaint alleges that hardware and software for mining Bitcoin, such as ASICs that perform SHA-256 hashing, infringe the '039 Patent Compl. ¶140

III. The Accused Instrumentality

Product Identification

  • The accused instrumentalities are Defendant Foundry Digital LLC's Bitcoin-related operations, products, and services Compl. ¶¶47-51 This includes the "Foundry USA Pool," one of the world's largest Bitcoin mining pools, as well as Foundry's own institutional-grade mining activities and the specialized hardware and software used therein, such as mining rigs, application-specific integrated circuits (ASICs), and digital asset wallets Compl. ¶5 Compl. ¶42 Compl. ¶51

Functionality and Market Context

  • Foundry's operations center on the Bitcoin network's "proof-of-work" consensus mechanism Compl. ¶¶39-40 The Foundry USA Pool aggregates the computational power (hashrate) of numerous individual miners to increase the collective chance of solving the cryptographic puzzle required to add a new block to the blockchain and earn rewards Compl. ¶¶41-43 The complaint alleges this pool is responsible for over 30% of the global Bitcoin hashrate Compl. ¶42 This is supported by a pie chart showing Foundry USA's market share among top Bitcoin mining pools Compl. p. 28 The core technical activities accused of infringement include:
    • Verifying Bitcoin transactions by validating ECDSA digital signatures Compl. ¶48
    • Generating new Bitcoin transactions and associated digital signatures, such as for daily payouts to pool members Compl. ¶49
    • Repeatedly performing SHA-256 hashing operations as part of the mining process Compl. ¶¶24-25 Compl. ¶40
    • Using digital asset wallets to manage and disburse cryptocurrency Compl. ¶50
  • A line graph in the complaint illustrates Foundry's significant and growing dominance in the Bitcoin mining market since 2021 Compl. p. 30

IV. Analysis of Infringement Allegations

The complaint references but does not include claim chart exhibits for its infringement allegations. The narrative infringement theories for the lead patents are summarized below.

  • '827 Patent Infringement Allegations: The complaint alleges that Foundry directly infringes at least claim 1 of the '827 Patent by making, using, or selling hardware and software compliant with the Bitcoin protocol Compl. ¶121 The infringement theory is that such systems necessarily practice the claimed method of generating a signer's public key (Q) by computing it from the signature components via the formula Q=r⁻¹(sR-eG) Compl. ¶119 The complaint alleges that Foundry's activities, such as verifying transactions within its mining pool and generating its own transactions for payouts, constitute use of this patented technology Compl. ¶48 Compl. ¶49

  • '197 Patent Infringement Allegations: The complaint alleges direct infringement of at least claim 1 of the '197 Patent, again through Foundry's use of hardware and software compliant with the Bitcoin protocol Compl. ¶126 The infringement theory centers on the claim's teaching of generating a digital signature that includes an "indicator" ("i") used to identify the correct ephemeral public key (R) from multiple possibilities recoverable from the signature's first component (r) Compl. ¶124 The complaint alleges that Foundry's generation of Bitcoin transactions, such as for its daily pool payouts, involves creating digital signatures in this infringing manner Compl. ¶49 Compl. ¶126

  • Identified Points of Contention:

    • Technical Question: A primary technical question will be one of implementation verification. Do the specific software implementations in the Bitcoin protocol (e.g., Bitcoin Core and its libraries like "libsecp256k1") actually perform the precise steps of public key recovery as recited in claim 1 of the '827 Patent or use an "indicator" for ephemeral key recovery as recited in claim 1 of the '197 Patent? The complaint's allegations are based on general compliance with the Bitcoin protocol, and the court will need to examine evidence of the specific algorithms at work.
    • Scope Question: A key question of claim scope is whether the patents' claimed optimizations are distinct from other known or used optimizations. The complaint discusses the "GLV Endomorphism" as a well-known optimization for Bitcoin signature verification that was implemented after a different patent expired (Compl. ¶20; Compl. ¶21). This raises the question of whether the accused activities use the GLV method (or another method) instead of, or in addition to, the specific methods claimed in the '827 and '197 patents.

V. Key Claim Terms for Construction

For the '827 Patent:

  • The Term: "generating a public key ... by computing Q=r⁻¹(sR-eG)"
  • Context and Importance: This functional language is the core of the asserted claim. The infringement dispute will likely hinge on whether Foundry's accused systems, by complying with the Bitcoin protocol, perform this exact computation to recover a public key. If the Bitcoin protocol achieves public key recovery through a different algorithm, or does not perform it at all in the manner accused, infringement may not be found.
  • Intrinsic Evidence for Interpretation:
    • Evidence for a Broader Interpretation: The patent specification explains that the purpose of the invention is to accelerate verification and reduce bandwidth by allowing the public key to be recovered from the signature itself rather than being sent separately Compl. ¶74 Language describing this general purpose could be used to argue for a broader construction covering any method of public key recovery from signature components.
    • Evidence for a Narrower Interpretation: The claim language recites a specific mathematical formula, "Q=r⁻¹(sR-eG)". The detailed description walking through the steps of this calculation would support a narrower interpretation requiring the accused system to perform this exact computation, not just any form of public key recovery (Compl. ¶119, citing '827 Patent, Ex. 1 at 4:48-5:4).

For the '197 Patent:

  • The Term: "generating an indicator to identify which value of multiple values recoverable from the first signature component is the ephemeral public key"
  • Context and Importance: Practitioners may focus on this term because the definition of "indicator" is critical. The infringement analysis will turn on what qualifies as an "indicator" and whether the Bitcoin protocol generates and uses such a feature as claimed. The dispute may center on whether a specific bit or piece of data within a Bitcoin transaction or signature serves the claimed identifying function.
  • Intrinsic Evidence for Interpretation:
    • Evidence for a Broader Interpretation: The patent's explanation that the technique provides a technological improvement by accelerating recovery of the ephemeral public key could support a broad definition of "indicator" as any data that facilitates this outcome Compl. ¶73
    • Evidence for a Narrower Interpretation: The shared specification describes the indicator "i" in a specific context: "i is just a single bit whose value indicates which of the [two possible] y's is to be used" when recovering the point R, often calculated as "y mod 2" '827 Patent, p. 20, col. 4:59-64 This specific embodiment could be used to argue that an "indicator" must be a single, explicit bit transmitted for this purpose, not just implicit information.

VI. Other Allegations

  • Indirect Infringement: The complaint alleges indirect infringement for the '039 Patent (related to hash processing). It alleges that Foundry induced infringement by "encouraging others to use bitcoin mining machines and compensating them for such use through pool 'payouts'" Compl. ¶142 It also alleges contributory infringement by supplying, financing, or deploying hardware and software (e.g., ASICs) that are a material part of the claimed invention, not a staple article of commerce, and have no substantial noninfringing use Compl. ¶143
  • Willful Infringement: The complaint alleges willful infringement for all five asserted patents Compl. Prayer for Relief ¶B The basis for this allegation is that Foundry was put on notice of the patents and the specific factual basis for its infringement on March 28, 2025, and April 11, 2025, but "did not take any action to stop its infringement" Compl. ¶120 Compl. ¶125 Compl. ¶130 Compl. ¶134 Compl. ¶139

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

  • A core issue will be one of technical implementation: Does the accused software and hardware, by virtue of complying with the open-source Bitcoin protocol, actually perform the specific cryptographic methods as recited in the patent claims? The case will likely require a deep-dive analysis of the Bitcoin Core source code to determine if there is a literal match between the accused systems' operations and the granular steps of the asserted claims.
  • A key evidentiary question will be one of alternative technologies: Does the accused Bitcoin infrastructure achieve computational efficiency using other known methods, such as the "GLV Endomorphism" prominently discussed in the complaint's background, rather than the specific public key and ephemeral key recovery techniques claimed in the '827 and '197 patents?
  • A central legal question will be one of claim scope: Can the claims, which describe specific methods for optimizing cryptographic functions, be construed broadly enough to read on the highly standardized, widely adopted, and constantly evolving algorithms implemented in the global Bitcoin network, or are the claims limited to the precise embodiments described in the patents?