Infinity Computer Products v. Oki Data Americas, Inc.

987 F.3d 1053
Court of Appeals for the Federal Circuit·Decided February 10, 2021·No. 20-1189·Published·Cited by 7 cases

Opinion

United States Court of Appeals for the Federal Circuit

INFINITY COMPUTER PRODUCTS, INC., Plaintiff-Appellant

v.

OKI DATA AMERICAS, INC.,

Defendant-Appellee

2020-1189

Appeal from the United States District Court for the District of Delaware in No. 1:18-cv-00463-LPS, Chief Judge Leonard P. Stark.

Decided: February 10, 2021

ANDREW DINOVO, DiNovo Price LLP, Austin, TX, argued for plaintiff-appellant. Also represented by NICOLE E. GLAUSER.

MARC ROBERT LABGOLD, Marc R. Labgold, P.C., Reston, VA, argued for defendant-appellee. Also represented by PATRICK J. HOEFFNER; JEFFREY T. CASTELLANO, ANDREW E. RUSSELL, JOHN W. SHAW, Shaw Keller LLP, Wilmington, DE.

2 INFINITY COMPUTER PRODUCTS v. OKI DATA AMERICAS, INC.

Before PROST, Chief Judge, CLEVENGER and TARANTO, Circuit Judges.

PROST, Chief Judge.

Infinity Computer Products, Inc. (“Infinity”) appeals the U.S. District Court for the District of Delaware’s final judgment of invalidity. We agree with the district court that the patent claims asserted by Infinity against Oki Data Americas, Inc. (“Oki Data”) are indefinite. We therefore affirm.

BACKGROUND

I

Infinity sued Oki Data for infringing four related patents : U.S. Patent Nos. 6,894,811 (“the ’811 patent”), 7,489,423, 8,040,574, and 8,294,915. 1 The patents share a specification and involve using a fax machine as a printer or scanner for a personal computer. The indefiniteness issues in this case revolve around the connection between the fax machine and the computer, termed a “passive link.” The parties agree that claim 1 of the ’811 patent is representative . That claim states:

1. A method of creating a scanning capability from a facsimile machine to a computer, with scanned image digital data signals transmitted through a bi-directional direct connection via a passive link between the facsimile machine and the computer, comprising the steps of:

1 Infinity asserted claims 1–2, 4, 6–7, and 18–20 of the ’811 patent; claims 1–4 and 6 of U.S. Patent No. 7,489,423; claims 1–2, 4–5, and 7–8 of U.S. Patent No. 8,040,574; and claims 1, 6–9, and 14–15 of U.S. Patent No. 8,294,915.

INFINITY COMPUTER PRODUCTS v. OKI DATA AMERICAS, INC. 3

by-passing or isolating the facsimile machine and the computer from the public network telephone line; coupling the facsimile machine to the computer; conditioning the computer to receive digital facsimile signals representing data on a scanned document ; and conditioning the facsimile machine to transmit digital signals representing data on a scanned document to the computer, said computer being equipped with unmodified standard protocol send/receive driver communications software enabling the reception of scanned image signals from the facsimile machine, said transmitted digital facsimile signals being received directly into the computer through the bi-directional direct connection via the passive link, thereafter, said computer processing the received digital facsimile signals of the scanned document as needed.

’811 patent claim 1 (emphases added).

The ’811 patent is a continuation-in-part of U.S. Patent App. No. 08/226,278 (“the ’278 application”), which itself ultimately issued as U.S. Patent No. 5,530,558. The “principal object” of the claimed invention is “to provide a circuit for interfacing a PC and a facsimile to enable the facsimile to be utilized as a scanner or a printer for a PC and to accomplish all of the objectives of a scanner or a printer in a simple straightforward manner through the use of a circuit of highly simplified design and low cost.” ’811 patent col. 1 ll. 39–45; see id. Fig. 1 (circuit diagram).

Figures 2a–e of the ’811 patent depict this circuit relative to a computer and a fax machine. They also depict “facsimile modem circuitry,” which “may be either internal or external” to the computer. Id. at col. 6 ll. 3–5.

4 INFINITY COMPUTER PRODUCTS v. OKI DATA AMERICAS, INC.

Figures 2b–d, for example, depict a fax machine connected to a computer via an RJ-11 cable, with fax modem circuitry located internal to the computer.

Id. Fig. 2b.

Figures 2f–h do not show fax modem circuitry interposed between the fax machine and the computer. Nor do they depict it as internal to the computer. The arrangement of Figure 2f, for example, “is used with PC’s which do not have a fax modem installed.” Id. at col. 6 ll. 62–63. This figure depicts a fax machine connected to a computer via an RS-232 cable, with both the circuit of the invention and the fax modem circuitry residing in the fax machine.

INFINITY COMPUTER PRODUCTS v. OKI DATA AMERICAS, INC. 5

Id. Fig. 2f. Unlike Figures 2a–e, Figures 2f–h were not disclosed in the parent ’278 application.

II

The term “passive link” does not appear in the ’811 patent specification. Nor does it appear in the parent ’278 application. Rather, Infinity first introduced the term during prosecution of the ’811 patent to distinguish an anticipating prior-art reference—U.S. Patent No. 5,452,106 (“Perkins”). This reference, the patent examiner noted, discloses using a fax machine as a scanner or printer for a computer. J.A. 2129–30.

Infinity’s initial attempts at distinguishing Perkins were unsuccessful. First, Infinity amended the claim to recite (among other things) data transfer “between the facsimile machine and the computer” that occurs “without interruption.” J.A. 1227. Infinity also distinguished Perkins at length in accompanying remarks, on the ground 6 INFINITY COMPUTER PRODUCTS v. OKI DATA AMERICAS, INC.

that Perkins includes an intervening component—“device 3”—between the fax machine and the computer. J.A. 1233–36. As Infinity noted, one function of device 3 was to serve as a fax modem. J.A. 1233.

Infinity asserted that, “[u]nlike Perkins,” the claimed invention permits “the uninterrupted transfer of scanning or printing signals between the facsimile and the computer without the use of intervening circuitry, and does not intercept the signals for demodulation as Perkins does with device 3.” J.A. 1234. Later in the same response, Infinity reiterated that its invention “does not require a microprocessor or any circuitry or software to interrupt and intercept the signals which occur in transmissions between a fax machine and a computer.” J.A. 1235.

The examiner was not persuaded. Perkins’s device 3, the examiner countered, “may be provided on a card for location in the computer.” J.A. 3443. This internal-card embodiment , the examiner continued, represents an “uninterrupted” connection between the fax machine and the computer that defeats Infinity’s distinction. J.A. 3443.

Infinity responded with further amendments and remarks in several subsequent responses, including by repeating the “intervening circuitry” distinction. Eventually, Infinity overcame Perkins by amending the claim to require a “passive link” between the fax machine and the computer and by using this new term as a hook for its intervening -circuitry distinction:

The Applicant creates a passive link between the facsimile machine and the computer in order to accommodate the signal transfer for printing or scanning . Therefore, the Applicant does not require any intervening apparatus as does Perkins. The applicant therefore believes[] Perkins did not anticipate the methods used by the Applicant.

INFINITY COMPUTER PRODUCTS v. OKI DATA AMERICAS, INC. 7

J.A. 2196 (emphases added). In support, Infinity emphasized that Perkins requires an intervening modem:

Perkins’[s] device 3 or card design requires a modem to be integrated into it in order to transfer signals for scanning or printing as part of his computer and facsimile transceiver interface. In contrast, the Applicant can transfer digital signals between the facsimile transceiver and the computer without the need for a modem at the computer interface.

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Infinity Computer Products v. Oki Data Americas, Inc., 987 F.3d 1053 (Fed. Cir. 2021).

987 F.3d 1053 (Infinity Computer Products v. Oki Data Americas, Inc.) — published by Counsel Stack Legal Research, free access to 12M+ legal documents.

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