Intel Corporation v. Alacritech, Inc.

• Court: Court of Appeals for the Federal Circuit
• Decided: July 17, 2020
• Docket: 19-1443
• Status: Unpublished

Opinion

Case: 19-1443 Document: 98 Page: 1 Filed: 07/17/2020

NOTE: This disposition is nonprecedential.

United States Court of Appeals for the Federal Circuit ______________________

INTEL CORPORATION, CAVIUM, LLC, DELL, INC., Appellants

v.

ALACRITECH, INC., Cross-Appellant

UNITED STATES, Intervenor ______________________

2019-1443, 2019-1447, 2019-1449, 2019-1450 ______________________

Appeals from the United States Patent and Trademark Office, Patent Trial and Appeal Board in Nos. IPR2017- 01405, IPR2017-01735, IPR2018-00336. ______________________

Decided: July 17, 2020 ______________________

GARLAND STEPHENS, Weil, Gotshal & Manges LLP, Houston, TX, for appellant Intel Corporation. Also repre- sented by MELISSA LARUE HOTZE; GREGORY SILBERT, New York, NY; AMANDA BRANCH, ANNE MARIE CAPPELLA, Red- wood Shores, CA.

KARINEH KHACHATOURIAN, Rimon, P.C., Palo Alto, CA, Case: 19-1443 Document: 98 Page: 2 Filed: 07/17/2020

for appellant Cavium, LLC. Also represented by NIKOLAUS A. WOLOSZCZUK.

KIRK T. BRADLEY, Alston & Bird LLP, Charlotte, NC, for appellant Dell, Inc. Also represented by EMILY CHAMBERS WELCH, Atlanta, GA; BRADY COX, Dallas, TX.

SANFORD IAN WEISBURST, Quinn Emanuel Urquhart & Sullivan, LLP, New York, NY, for cross-appellant. Also represented by JOSEPH M. PAUNOVICH, LLP, Los Angeles, CA.

MELISSA N. PATTERSON, Appellate Staff, Civil Division, United States Department of Justice, Washington, DC, for intervenor. Also represented by COURTNEY DIXON, SCOTT R. MCINTOSH, ETHAN P. DAVIS; THOMAS W. KRAUSE, FARHEENA YASMEEN RASHEED, Office of the Solicitor, United States Patent and Trademark Office, Alexandria, VA. ______________________

Before MOORE, CHEN, and STOLL, Circuit Judges. MOORE, Circuit Judge. Alacritech, Inc. sued Intel Corporation, Cavium, LLC and Dell, Inc. (collectively, Appellants), alleging infringe- ment of claims of U.S. Patent No. 7,124,205. Intel filed a petition seeking inter partes review of claims 3, 9, 10, 16, 22, 24–33, 35 and 36 of the ’205 patent. The Board insti- tuted review and subsequently joined Cavium and Dell as petitioners. The Board issued a final written decision hold- ing that Appellants had proven claims 3, 9, 10, 16, 22, 24– 30, 35 and 36 would have been unpatentable as obvious, but had not proven the unpatentability of claims 31–33. Appellants appeal the Board’s holding with respect to claims 31–33. Alacritech cross-appeals the Board’s deci- sion holding the remaining challenged claims unpatentable as obvious. We have jurisdiction under 28 U.S.C. Case: 19-1443 Document: 98 Page: 3 Filed: 07/17/2020

INTEL CORP. v. ALACRITECH, INC. 3

§ 1295(a)(4)(A). Because the Board’s decision was not er- roneous and substantial evidence supports its findings, we affirm. DISCUSSION The ’205 patent is directed to a system and method for accelerating data transfer between a network and storage unit. ’205 patent at 3:42–43. The claimed invention recites an interface device that is connected to a host computer and performs portions of network communications, includ- ing network layer and transport layer processing. Id. at 3:40–51. Claim 3 and claim 1 from which it depends are illustrative and recite: 1. An apparatus comprising: a host computer having a protocol stack and a des- tination memory, the protocol stack including a session layer portion, the session layer portion be- ing for processing a session layer protocol; and a network interface device coupled to the host com- puter, the network interface device receiving from outside the apparatus a response to a solicited read command, the solicited read command being of the session layer protocol, performing fast-path pro- cessing on the response such that a data portion of the response is placed into the destination memory without the protocol stack of the host computer per- forming any network layer processing or any transport layer processing on the response. 3. The apparatus of claim 1, wherein the session layer protocol is ISCSI. The Board held claims 3, 9, 10, 16, 22, 24–30, 35 and 36 unpatentable as obvious in view of the combination of Case: 19-1443 Document: 98 Page: 4 Filed: 07/17/2020

Thia, 1 Satran I, 2 and Satran II. 3 We review the Board’s legal determinations de novo and its factual findings for substantial evidence. In re Van Os, 844 F.3d 1359, 1360 (Fed. Cir. 2017). “Obviousness is a question of law based on underlying facts,” including the scope and content of the prior art. Arctic Cat Inc. v. Bombardier Recreational Prods. Inc., 876 F.3d 1350, 1358 (Fed. Cir. 2017). I. Alacritech’s Cross-Appeal Alacritech challenges the Board’s findings that Thia discloses offloading network layer and transport layer pro- cessing from the host computer and the Board’s motivation to combine and reasonable expectation of success anal- yses. 4 Substantial evidence supports the Board’s findings. A. Network Layer Offloading The Board found that Thia discloses offloading network layer functionality from the host computer as claimed.

1 Thia, Y.H. and Woodside, C.M., A Reduced Opera- tion Protocol Engine (ROPE) for a Multiple-Layer Bypass Architecture, in PROTOCOLS FOR HIGH SPEED NETWORKS IV 224 (G. Neufeld & M. Ito eds., 1995) (Thia). 2 J. Satran et al., SCSI/TCP (SCSI over TCP), Feb. 2000 (Satran I). 3 J. Satran et al., iSCSI (Internet SCSI), July 2000 (Satran II). The Board further relied on U.S. Patent No. 5,894,560 (Carmichael) to support its holding that depend- ent claims 24–26 would have been obvious. Because Alac- ritech only challenges the Board’s decision as it relates to Thia, Satran I, and Satran II, we do not separately con- sider Carmichael. 4 Alacritech’s appeal briefing also included a chal- lenge to the appointment of the Administrative Patent Judges on the Board under the Appointments Clause of the Constitution, but this challenge has since been withdrawn and waived. See Dkt. 82. Case: 19-1443 Document: 98 Page: 5 Filed: 07/17/2020

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J.A. 6. It found that a person of ordinary skill in the art would understand Thia’s disclosure of bypassing “multiple layers” to include offloading network layer processing. J.A. 7. Alacritech contends that Thia’s disclosure of of- floading network layer functionality is merely conceptual and therefore does not provide a skilled artisan with a rea- sonable expectation of success. We do not agree. Thia discloses a bypass stack for offloading multiple layers from a standard protocol stack on the host computer. J.A. 3294–25, 3297. It depicts the architecture of the by- pass stack, which is “practical in terms of chip complexity and area, using current gate array technology.” J.A. 3294– 27, J.A. 3300. Although Thia describes the design of the bypass stack with particular reference to offloading session and transport layer processing, its teachings are not so lim- ited. See EWP Corp. v. Reliance Universal Inc., 755 F.2d 898, 907 (Fed. Cir. 1985) (“A reference must be considered for everything it teaches by way of technology and is not limited to the particular invention it is describing and at- tempting to protect.”). For example, Thia suggests that the increased processing speed and efficiency achieved using multi-layer offloading are “increased further in cases where some layers, like the network and application layers, have been further subdivided into sublayers.” J.A. 3297 (emphasis added). Moreover, Thia expressly contemplates “implementing an entire service through all layers for cer- tain cases,” thereby “simplif[ying] the interface between the host and the adaptor chip.” J.A. 3295. Accordingly, substantial evidence supports the Board’s finding that Thia discloses offloading network layer functionality with a reasonable expectation of success. See Soft Gel Techs., Inc. v. Jarrow Formulas, Inc., 864 F.3d 1334, 1342 (Fed. Cir. 2017) (holding that obviousness requires only a rea- sonable expectation of success, not “absolute predictabil- ity”). Case: 19-1443 Document: 98 Page: 6 Filed: 07/17/2020

B. Transport Layer Offloading The Board further found that Thia discloses offloading transport layer processing from the host computer. J.A. 8. It found that “one of skill in the art would have understood that when the bypass stack of Thia is implemented for the transport layer, as Thia discloses, the entire transport layer would have been bypassed.” J.A. 8–9. Alacritech con- tends that substantial evidence does not support the Board’s finding because two embodiments in Thia offload only a portion of the transport layer processing. We do not agree. Thia expressly discloses bypassing the entire transport layer using a bypass stack. It describes the design of its bypass stack “for the OSI Session and Transport layer” and concludes that it is “feasible to implement the bypass stack (at least for the transport and session layers).” J.A. 3294, 3306. Aside from Thia’s disclosure that “there is no seg- mentation/reassembly within the bypass path,” Alacritech has not identified any transport layer functionality that would not be offloaded from the host computer in any of Thia’s embodiments. And as Dr. Lin testified, a person of ordinary skill in the art would have understood Thia’s dis- closure of “no segmentation/reassembly within the bypass path” to address lower-layer reassembly, not transport layer reassembly. J.A. 5657–58 ¶ 14. Dr. Lin therefore concluded “Thia discloses reassembly at the transport layer.” J.A. 5658–59 ¶ 15. Moreover, as discussed above, Thia discloses bypassing the entire protocol stack, includ- ing the transport layer, in certain cases. J.A. 3295. Ac- cordingly, substantial evidence supports the Board’s finding that Thia discloses offloading the entire transport layer from the host computer. C. Motivation to Combine and Reasonable Expectation of Success Alacritech contends that the Board’s decision must be vacated for failure to expressly find that a person of Case: 19-1443 Document: 98 Page: 7 Filed: 07/17/2020

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ordinary skill in the art would have been motivated to com- bine the asserted references with a reasonable expectation of success. We do not agree. When considering whether a claim would have been obvious in light of a combination of multiple references, the Board “consider[s] whether a [per- son of ordinary skill in the art] would have been motivated to combine the prior art to achieve the claimed invention and whether there would have been a reasonable expecta- tion of success in doing so.” In re Warsaw Orthopedic, Inc., 832 F.3d 1327, 1333 (Fed. Cir. 2016). We have explained that the Board must “articulate a satisfactory explanation for its action including a rational connection between the facts found and the choice made.” In re Nuvasive, 842 F.3d 1376, 1382 (Fed. Cir. 2016) (quoting Motor Vehicle Mfrs. Assoc. v. State Farm Mut. Auto. Ins. Co., 463 U.S. 29, 43 (1983)). The Board found that Appellants provided “sufficient reasons, based on evidence of record, to support the conclu- sion that the [asserted] combination would have been obvi- ous.” J.A. 9. The Board further stated that it was “not persuaded by [Alacritech’s] argument for at least the rea- sons set forth by [Appellants]” and cited to pages of Appel- lants’ reply brief that discuss the “Motivation to Combine” sections of Appellants’ petition. Id. While “[u]ndoubtedly, it would be preferable for the [Board] to provide its own reasoned explanation,” we can discern that the Board found the cited passages from Appellant’s petition persua- sive. Icon Health & Fitness, Inc. v. Strava, Inc., 849 F.3d 1034, 1045 (Fed. Cir. 2017). “This is sufficient, if mini- mally, to explain the connection between the [Board]’s fac- tual findings and legal conclusion” of obviousness. Id. We understand the Board as having expressly adopted as per- suasive petitioner’s arguments regarding motivation to Case: 19-1443 Document: 98 Page: 8 Filed: 07/17/2020

combine and reasonable expectation of success. 5 The Board set forth the specific pages of Appellants’ briefing with which it agreed. We therefore decline to overturn the Board’s decision. II. Appellants’ Appeal Claims 31–33 of the ’205 patent recite a “means cou- pled to the host computer” for (1) “receiving from outside the apparatus a response to an iSCSI read request com- mand,” (2) “fast-path processing a portion of the response,” (3) “receiving a subsequent portion of the response,” and (4) “slow-path processing the subsequent portion.” ’205 patent at claim 31. Appellants argued before the Board that claims 31–33 are invalid as indefinite under 35 U.S.C. § 112(6) because the ’205 patent “fails to disclose any struc- ture, coupled to the host computer, that performs all four functions.” J.A. 137. A majority of the Board panel agreed that the specification fails to disclose sufficient structure but declined to invalidate claims 31–33 as indefinite, be- cause the Board in an inter partes review “do[es] not con- sider issues of validity under 35 U.S.C. § 112.” J.A. 17–18. 6 Instead, the Board held that Appellants failed to propose a construction identifying the structure for the claimed func- tion as required under 37 C.F.R. §§ 42.104(b)(3)–(4) and therefore failed to prove that claims 31–33 are

5 In view of the Board’s characterization of the as- serted combination as “the use of a particular known pro- tocol [] in a known system that uses such known protocols . . . in a known way to achieve a known result,” J.A. 10, we decline Alacritech’s invitation to find that the Board disclaimed its obligation to find a motivation to com- bine. See Warsaw, 832 F.3d at 1333. 6 The dissent concluded that the ’205 patent dis- closes sufficient structure for performing the recited func- tionality. J.A. 28–33. It further concluded that claims 31– 33 are unpatentable as obvious. J.A. 33–34. Case: 19-1443 Document: 98 Page: 9 Filed: 07/17/2020

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unpatentable as obvious. J.A. 18. We review the Board’s interpretation of its statutory authority de novo. See Forest Grp., Inc. v. Bon Tool Co., 590 F.3d 1295, 1301 (Fed. Cir. 2009). We review decisions related to compliance with the Board’s regulations for an abuse of discretion. Ericsson Inc. v. Intellectual Ventures I LLC, 901 F.3d 1374, 1379 (Fed. Cir. 2018). Appellants contend that the Board had sufficient infor- mation to determine the patentability of claims 31–33. They argue that the petition identified the structures cor- responding to the recited functions and mapped each struc- ture to disclosures in the prior art. They further argue that because Alacritech made no argument to distinguish claims 31–33 from other challenged claims of similar scope, these claims should similarly be held unpatentable as ob- vious. Appellants’ contentions are unavailing. In an inter partes review, where a challenged claim con- tains a means-plus-function limitation, the petition “must identify the specific portions of the specification that de- scribe the structure, material or acts corresponding to each claimed function.” 37 C.F.R. § 42.104(b)(3); see also id. § 42.104(b)(4) (requiring that the petition identify where equivalent structure is found in the asserted references). Appellants’ petition failed to do so. In fact, Appellants acknowledged before the Board that they “did not advance a specific construction[] identifying a concrete correspond- ing structure[] for the ‘means’ term” recited in claims 31– 33. J.A. 940. Instead, Appellants asserted that “at best, the ’205 patent discloses a network adaptor that performs” three of the four recited functions. That Alacritech did not distinguish claims 31–33 from other challenged claims does not relieve Appellants of their affirmative duty to identify specific structure corresponding to the claimed functions both in the patent and the asserted references. Therefore, we conclude the Board did not abuse its discre- tion in determining that Intel failed to comply with the re- quirements of 37 C.F.R. §§ 42.104(b)(3)–(4). Case: 19-1443 Document: 98 Page: 10 Filed: 07/17/2020

Appellants alternatively argue that the Board should have held the claims unpatentable as indefinite. They ar- gue that 35 U.S.C. § 318(a) requires the Board to issue a final written decision addressing the patentability of all claims in an instituted inter partes review, even if for rea- sons outside the statutory grounds of institution. We do not agree. The Board cannot invalidate a patent as indefi- nite in an inter partes review proceeding. See, e.g., 35 U.S.C. § 311(b) (limiting the scope of inter partes review to “ground[s] that could be raised under section 102 or 103.”). Section 318(a) requires that the Board issue a final written decision with respect to the patentability of all challenged claims. See 35 U.S.C. § 318(a). It does not grant the Board authority to act outside its statutory limits by holding a pa- tent claim unpatentable as indefinite under § 112. See Cuozzo Speed Techs., LLC v. Lee, 136 S. Ct. 2132, 2141–42 (2016). Nor does the Supreme Court’s decision in SAS grant the Board such authority. See SAS Ins., Inc. v. Iancu, 138 S. Ct. 1348, 1354 (2018) (“Nothing suggests the Direc- tor enjoys a license to depart from the petition and institute a different inter partes review of his own design.”). Accord- ingly, we hold the Board properly determined that it lacked legal authority to hold the claims unpatentable as indefi- nite. As the Board itself recognizes, it does not have legal authority to decide indefiniteness in the context of an inter partes review. Thus, the Board’s agreement that the spec- ification does not disclose sufficient structure is outside the scope of its statutory authority and is therefore not binding and will not be reviewed by this court. CONCLUSION We have considered the parties’ remaining arguments and find them unpersuasive. For the foregoing reasons, we affirm the Board’s decision. AFFIRMED Case: 19-1443 Document: 98 Page: 11 Filed: 07/17/2020

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COSTS No costs.