Crypto Research, LLC v. Assay Abloy, Inc.

236 F. Supp. 3d 671, 2017 WL 664035, 2017 U.S. Dist. LEXIS 23008
CourtDistrict Court, E.D. New York
DecidedFebruary 17, 2017
Docket16 Civ. 1718 (AMD) (RER)
StatusPublished
Cited by7 cases

This text of 236 F. Supp. 3d 671 (Crypto Research, LLC v. Assay Abloy, Inc.) is published on Counsel Stack Legal Research, covering District Court, E.D. New York primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
Crypto Research, LLC v. Assay Abloy, Inc., 236 F. Supp. 3d 671, 2017 WL 664035, 2017 U.S. Dist. LEXIS 23008 (E.D.N.Y. 2017).

Opinion

MEMORANDUM DECISION AND ORDER

Ann M. Donnelly, United States District Judge

In this patent infringement action, the plaintiff alleges that the defendants, Assay Abloy, Inc. and HID Global Corporation, directly, indirectly, and willfully infringed asserted claims in three patents assigned to the plaintiff by inventor Dr. Bjorn Mar-kus Jakobsson: U.S. Patent No. 8,086,866 (the ’866 Patent), United States Patent No. 8,516,262 (the ’262 Patent), and United States Patent No. 8,990,576 (the ’576 Patent) (collectively the Patents-in-Suit). The defendants move to dismiss, claiming that the patents are directed to subject matter that is not patent-eligible, and that the complaint fails to state a claim for which relief can be granted. The plaintiff opposes. I heard oral argument on February 15, 2017. For the reasons set out below, the defendants’ motion to dismiss is denied.

BACKGROUND

A. Background of the Patented Concept1

The United States Patent and Trademark Office issued the ’866 Patent, the ’262 Patent, and the ’576. Patent, entitled “Methods and Apparatus for Efficient Computations of One-Way Chains in Cryptographic Applications,” on December. 27, [675]*6752011, August 20, 2013, and March 24, 2015, respectively.

The Patents-in-Suit relate generally to the field of cryptography, a field of mathematics targeted to the secure sharing of information. Applications include, among other things, encryption and decryption, digital signatures, and device authentication. Here, the Patents-in-Suit address a technique for reducing the computation difficulty and storage capacity demands in using one-way chains on “lightweight” processing devices, like mobile telephones and smartcards.2 The Patents-in-Suit include apparatus, computer-readable medium, and method claims.

By way of background, a one-way function refers to a scheme that is easy to compute but hard to invert.3 For some cryptographic applications, it is advantageous to use a one-way chain. A chain in this context refers to a series of values, which may be used to “increment time.” However, the conventional use of a one-way chain necessitates either storage of all values or computation by an iterated application of the function. Thus, if no values are stored, then the computation requires an amount of work proportional to the length of the chain. This creates significant storage and computation demands.

The Patents-in-Suit describe a method for finding values in a one-way chain that facilitates computation of other values in a one-way chain, and thus reduces the necessary storage or computation. The patented approach is to use “helper values” or “pegs” to reduce the computation requirements, and to move the pegs to appropriate positions in the chain, so that the efficiency gains are repeated for each chain output value. Below, Figure 2B is an example one-way chain computation process consistent with the patented method:

[676]*676[[Image here]]

Claim 1 of the ’866 patent reads:

1. A method implemented by a processor, the processor being coupled to a memory, the memory having a designated amount of storage available for storing values of a one-way chain, the designated amount of available storage being less than that required to store simultaneously all of the values of the one-way chain, the method comprising the steps of:
storing in the memory a subset of the values of the one-way chain as helper values for facilitating computation of other values of the one-way chain not in the subset, the subset of values of the one-way chain comprising a plurality of designated nonconsecutive values of the one-way chain;
utilizing one of the values in the subset of values to compute one of the other of the one-way,chain not in the subset;
generating a cryptographic output determined by the computed value not in the subset; and
updating the stored subset of values of the one-way chain so as to replace at least one of the helper values with a new helper value not previously part of the subset.

(’866 Patent, cl. 1.) To the extent that this patented method improves the storage and computational efficiency of a one-way chain computation process, it also increases the efficiency of any application that uses one-way chain computation. However, nothing in the claims or patent descriptions limits the implementation of the method to a specific type of device.

[677]*677B. Allegations in the Complaint

According to the plaintiff, the defendants’ CoreStreet-branded and Activlden-tity-branded products — which the defendants “make[], use[], offer[] to sell, or sell[]” — infringed the Patents-in-Suit,4 in that the products, upon information and belief, provided certificate validation features “in part through'the use of efficient one-way chain computation techniques of the type developed by Dr. Jakobsson and described by the' Patents-in-Suit.”5 (Compl. ¶ 20.)

The, plaintiff concedes that it, did not reverse engineer the CoreStreet and Acti-vldentity products in order to establish that they used the computation technique covered by the Patents-in-Suit; according to the plaintiff, the CoreStreet and Activl-dentity products were sold subject to an agreement prohibiting buyers from reverse engineering the products. (Compl, ¶ 28.)

In addition to the direct infringement claim, the plaintiff brings claims for indirect infringement. The plaintiff argues that by advertising, selling, licensing, or supporting the products, the defendants induced others to infringe the Patents-in-Suit. (Compl. ¶¶39, 48, 60.) ‘Additionally, the plaintiff contends that by selling the products, the defendants contributed to the infringement of the Patents-in-Suit by customers and end-users, who use the Cor-eStreet and Activldentity products for certificate validation. (Compl. ¶¶ 37, 49, 61.) The/plaintiff alleges upon information and belief that the defendants’ Activldentity and CoreStreet products “have no substantial use outside of the context of certificate validation, which functionality is implemented in such products using efficient one-way chain computation techniques of the type ... described and claimed in the Patents-in-Suit.” (Compl, ¶ 31.)

Finally, the plaintiff contends that the defendants’ infringement was willful under two separate theories. First, the plaintiff points out that four patents,6 referred to in this memorandum as the ASSA-Patents— for which the defendants’ parent company, ASSA Abloy AB, is the current assignee— acknowledge that the techniques developed by Dr. Jakobsson provide a “surprising time/storage tradeoff.” (Compl. ¶ 13.) Thus, according to the plaintiff,-the defendants knew or should have known that their products infringed the Patents-in-Suit.

Second, the plaintiff maintains that-the defendants knew of the specification and issued ■ claims of the Patents-in-Suit, because the plaintiff sent the defendants letters in February, May, and December' of 2015, identifying the Patents-in-Suit, the citations to Dr. Jakobsson’s work in the ASSA Patents, and “suggestions in one or more of the ASSA Patents to utilize effi[678]*678cient one-way chain computation techniques of the type developed by Dr.

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236 F. Supp. 3d 671, 2017 WL 664035, 2017 U.S. Dist. LEXIS 23008, Counsel Stack Legal Research, https://law.counselstack.com/opinion/crypto-research-llc-v-assay-abloy-inc-nyed-2017.