- Shenzhen Tuozhu Technology Co. Ltd. v. Stratasys, Inc.Institution deniedPTAB · Oct 6, 2025 · IPR2025-00585 · APJ Lilan Ren · IPR · Institution
The Board denied institution on claims 1–6, 10–19 because claim 1’s scope is ambiguous and the petition did not show a reasonable likelihood of prevailing on any asserted obviousness ground.
RulingsInstitution decision- PTAB / AIA Trials › Institution threshold (reasonable likelihood / more likely than not)Institution denied meritsInstitution denied
“review. See 35 U.S.C. § 314 (2024); 37 C.F.R. § 42.4(a) (2024). Institution of an inter partes review requires that “the information presented in the petition . . . and any response . . . shows that there is a reasonable likelihood that the petitioner would prevail with respect to at least 1 of the claims challenged in the petition.” 35 U.S.C. § 314(a). For the reasons set forth below, we determine that the scope of claim 1 is ambiguous and that there is not a reasonable likelihood that Petitioner will prevail with respect to at least one challenged claim, and we deny inter partes review.1” slip op. at 2
- Claim Construction › Threshold & procedure › Whether a term needs construction (O2 Micro)Term construed board ownOther
“distinguishes and contrasts build material property from operational parameters. The diagnostic test passage therefore only describes a diagnostic test of the build material property but does not describe a subsequent diagnostic test to assess whether an operational parameter is suitable for the printer. Based solely on the diagnostic test passage and the prosecution history, a possible interpretation may be that the operational parameter determination in claim element 1b encompasses the diagnostic testing in claim element 1c. That is, “performing a diagnostic test to determine whether the operational parameter is suitable for the three-dimensional printer” in claim element 1c is subsumed as part of “determining an operational parameter of a fabrication process using the three-dimensional printer based upon the data, the operational parameter including at least one of a build platform temperature, a build volume temperature, an infill requirement, a rafting requirement, a support structure requirement, and a cooling requirement” in claim element 1b.” slip op. at 15
- Disclosure Requirements (§112) › Written description (Ariad)Not entitled to earlier dateOther
“benefit of the filing date of an earlier filed application only if the disclosure of the earlier application provides support for the claims of the later application, as required by 35 U.S.C. § 112.” PowerOasis, Inc. v. T-Mobile USA, Inc., 522 F.3d 1299, 1306 (Fed. Cir. 2008); see also Research Corps. Techs. v. Microsoft Corp., 627 F.3d 859, 871–72 (Fed. Cir. 2010) (holding that claims of the later-filed application, which were not limited to a “blue noise mask,” were “not entitled to claim the benefit of their parent applications’ filing dates”); ICU Med., Inc. v. Alaris Med. Sys., 558 F.3d 1368, 1377–78 (Fed. Cir. 2009) (holding that “spikeless” claims “added years later during prosecution” were not supported by the specification which “describe[d] only medical valves with spikes”); Tronzo v. Biomet, Inc., 156 F.3d 1154, 1158–60 (Fed. Cir. 1998) (holding the generic shaped cup claims of the later-filed child application were not entitled to the filing date of the parent application that “disclosed only a trapezoidal cup and nothing more”). “To satisfy the written description requirement the disclosure of the prior application must convey with reasonable clarity to those skilled in the art that, as of the filing date sought, [the inventor] was in possession of the invention.” PowerOasis, 522 F.3d at 1306 (emphasis omitted; alteration in original). The sufficiency of written description support is based on “an objective inquiry into the four corners of the specification from the perspective of a person of ordinary skill in the art.” Ariad Pharm., Inc. v. Eli Lilly & Co., 598 F.3d 1336, 1351 (Fed. Cir. 2010) (en banc).” slip op. at 20
- Skill levelSkill level petitioner adoptedDecided for petitioner
“Petitioner contends that a person of ordinary skill in the art in the field in the relevant time frame would have had “(1) at least a bachelor’s degree in Mechanical Engineering, Computer Engineering, Chemical Engineering, Materials Science, or a related field, and (2) at least two years of research or industry experience in 3D printing or materials used for 3D printing.” Pet. 5 (citing Ex. 1003 ¶ 20). Petitioner also contends that “[a]dditional experience could substitute for a formal degree or formal training (and vice versa).” Id. (citing the same). Patent Owner contends that an ordinarily skilled artisan “would have had a bachelor’s degree in Mechanical Engineering, Computer Engineering, Electrical Engineering, Chemical Engineering, Materials Science, or a comparable field and at least two years of experience related to 3D printing, with additional experience potentially being a substitute for a formal degree or training (and vice versa).” Prelim. Resp. 12. For purposes of this decision, we adopt Petitioner’s definition of the level of ordinary skill in the art as it appears unopposed and consistent with the disclosures of the ’464 patent and the prior art of record. See Okajima v. Bourdeau, 261 F.3d 1350, 1355 (Fed. Cir. 2001).” slip op. at 9
Claim construction§ 112 disclosurecites Phillips · KSR · GrahamPatents in suitUS 11,167,464 - Twitter, Inc. v. Palo Alto Research Center LLCAll claims unpatentablePTAB · Mar 22, 2023 · IPR2021-01430 · APJ Christopher L Ogden · IPR · Final written decision
Claims 1–5, 7–11, 13–17, 19, and 20 are unpatentable under § 103; PARC’s contingent motion to amend is denied because the proposed substitute claims lack written-description support and are unpatentable.
RulingsFinal written decision- Skill levelSkill level petitioner adoptedOther
“Relying on Dr. Turnbull’s testimony, Twitter argues that a person of ordinary skill in the art “would at minimum have a bachelor’s in software, computer, or electrical engineering or computer science with at least two years’ experience in software development, including with respect to context-aware devices and systems, or the equivalent.” Pet. 16 (citing Ex. 1003 ¶ 24). Also, “[a]dditional graduate education could substitute for professional experience, or significant experience in electronic messaging could substitute for formal education.” Id. (citing Ex. 1003 ¶ 24). For this proceeding, PARC does not dispute this proposed level of ordinary skill. PO Resp. 21. Because Twitter’s uncontroverted articulation of the level of ordinary skill in the art is supported by testimonial evidence and appears consistent with the types of problems and solutions in the ’439 patent, we adopt it for this decision. See, e.g., Ex. 1001, 1:4–33 (“Background” section of the ’439 patent, describing the field and related art as relating to the use of contextual data in computer systems).” slip op. at 9
- Claim Construction › Threshold & procedure › Whether a term needs construction (O2 Micro)No construction neededOther
“We agree as to Twitter’s last point, as we discuss below, that Cheng teaches a graph-based model that stores data in memory on a per-user basis. See infra Section IV.C.4(a); Ex. 1005, Fig. 7. Moreover, this decision does not address grounds of the Petition that omit Cheng as a reference, Cheng discloses a “context graph” under either party’s construction. Thus, we need not construe the term for this decision. See Nidec, 868 F.3d at 1017. Because the terms “recommender” and “application event data and/or operating system data” are not contested and are not material to our decision, we do not construe these two terms. See Nidec Motor Corp. v. Zhongshan Broad Ocean Motor Co., 868 F.3d 1013, 1017 (Fed. Cir. 2017) (“[W]e need only construe terms ‘that are in controversy, and only to the extent necessary to resolve the controversy’ . . . .” (quoting Vivid Techs., Inc. v. Am. Sci & Eng’g, Inc., 200 F.3d 795, 803 (Fed. Cir. 1999))). To the extent that other claim terms are significant, we discuss them below in the context of the asserted prior art.” slip op. at 12
- Obviousness (§103) › Motivation to combine / reasonable expectation of successMotivation foundReasonable expectation foundUnpatentable
“We determine that Twitter has persuasively, and with sufficient specificity, shown that the combination of Huomo and Cheng teaches all aspects of limitation 13[d], and that it would have been obvious to modify Huomo by using Cheng’s personal interest graph as the model for how facts and assertions are stored in Huomo’s “blackboard.” This modification would have been compatible with Huomo and would simply affect the form of the information, or types of information, that are stored in Huomo’s blackboard. See Intel Corp., v. PACT XPP Schweiz AG, No. 2022-1037 at 10–13 (Fed. Cir. Mar. 13, 2023) (there is motivation to combine where one reference addresses a problem in one way, and another reference addresses the same problem in an alternative way that would be a suitable option). We agree with Twitter that this modification would have been within the ordinary skill in the art, that there would have been a reasonable expectation of success, and that an ordinarily skilled artisan would have recognized benefits to using Cheng’s graph-based structure such as the ability to better track social relationships through annotating the nodes and edges, and the ability to more easily track users’ shared interests and the influences that users may have on each other. See Pet. 53–55; Ex. 1003 ¶¶ 156–161.” slip op. at 30
- Obviousness (§103) › Motivation to combine / reasonable expectation of success › HindsightDecided for petitioner
“We determine that Twitter has persuasively, and with sufficient specificity, shown that the combination of Huomo and Cheng teaches all aspects of limitation 13[d], and that it would have been obvious to modify Huomo by using Cheng’s personal interest graph as the model for how facts and assertions are stored in Huomo’s “blackboard.” This modification would have been compatible with Huomo and would simply affect the form of the information, or types of information, that are stored in Huomo’s blackboard. See Intel Corp., v. PACT XPP Schweiz AG, No. 2022-1037 at 10–13 (Fed. Cir. Mar. 13, 2023) (there is motivation to combine where one reference addresses a problem in one way, and another reference addresses the same problem in an alternative way that would be a suitable option). We agree with Twitter that this modification would have been within the ordinary skill in the art, that there would have been a reasonable expectation of success, and that an ordinarily skilled artisan would have recognized benefits to using Cheng’s graph-based structure such as the ability to better track social relationships through annotating the nodes and edges, and the ability to more easily track users’ shared interests and the influences that users may have on each other. See Pet. 53–55; Ex. 1003 ¶¶ 156–161.” slip op. at 30
Patent outcomesUS 9,208,439 unpatentableClaim construction§ 103 obviousness§ 112 disclosurecites Phillips · KSR · GrahamPatents in suitUS 9,208,439 - Hulu, LLC v. Sito Mobile R&D IP, LLC And Sito Mobile, Ltd.All claims unpatentablePTAB · Apr 15, 2022 · IPR2021-00158 · APJ Joni Y Chang · IPR · Final written decision
Claims 1–3, 5, 6, 19–21, 23, 26, 27, 30, 31, and 33 are unpatentable as obvious over Eyal and Wiser; claims 1–3 and 6 are also unpatentable over Madison and Holtz.
RulingsFinal written decision- PTAB / AIA Trials › Institution threshold (reasonable likelihood / more likely than not)InstitutedInstituted
“I. INTRODUCTION Hulu, LLC (“Petitioner”) filed a Petition requesting an inter partes review (“IPR”) of claims 1−3, 5, 6, 19−21, 23, 26, 27, 30, 31, and 33 (“the challenged claims”) of U.S. Patent No. 9,026,673 B2 (Ex. 1001, “the ’673 patent”). Paper 2 (“Pet.”), 1. SITO Mobile R&D IP, LLC and SITO Mobile Ltd. (collectively, “Patent Owner”) filed a Preliminary Response (Paper 6, “Prelim. Resp.”). On April 20, 2021, we instituted the instant inter partes review as to all of the challenged claims for all of the grounds of unpatentability asserted in the Petition. Paper 9 (“Dec.”).” slip op. at 2
- Skill levelOther
“C. Level of Ordinary Skill in the Art In determining the level of ordinary skill in the art, various factors” slip op. at 15
- Obviousness (§103) › Motivation to combine / reasonable expectation of successUnpatentableMotivation foundUnpatentable
“server to validate and authenticate the user requesting the media file.” Ex. 1003 ¶¶ 150−151. “[W]hen a patent ‘simply arranges old elements with each performing the same function it had been known to perform’ and yields no more than one would expect from such an arrangement, the combination is obvious.” KSR, 550 U.S. at 418 (quoting Sakraida v. Ag Pro, Inc., 425 U.S. 273, 282 (1976)). For the foregoing reasons, we find that Petitioner has articulated an adequate reason to combine the teachings of Eyal and Wiser. 8. Conclusion on Obviousness over Eyal and Wiser” slip op. at 50
- Disclosure Requirements (§112) › Written description (Ariad)Not entitled to earlier dateDecided for petitioner
“For the foregoing reasons, we agree with Petitioner that neither the” slip op. at 54
Patent outcomesUS 9,026,673 unpatentable§ 103 obviousness§ 112 disclosurecites KSR · GrahamPatents in suitUS 9,026,673 - Flex Logix Technologies, Inc. v. Venkat KondaRehearing deniedPTAB · Sep 16, 2020 · IPR2020-00260 · APJ Jo-Anne M Kokoski · IPR · Rehearing
The Board denied the Patent Owner’s rehearing requests, leaving institution in place for claims 1–7, 11, 15–18, 20–22, 32, and 47.
RulingsRehearing decision- RehearingRehearing, deniedDenied
“believes the Board misapprehended or overlooked, and the place where each matter was previously addressed in a motion, an opposition, or a reply. 37 C.F.R. § 42.71(d). Patent Owner, as the party challenging the Decisions, has the burden of showing that the Decisions should be modified. Id. When rehearing a decision on a petition, the Board reviews the decision for an abuse of discretion. Id. § 42.71(c). An abuse of discretion may arise if a decision is based on an erroneous interpretation of the law, if a factual finding is not supported by substantial evidence, or if an unreasonable judgment is made in weighing relevant factors. In re Gartside, 203 F.3d 1305, 1315–16 (Fed. Cir. 2000).” slip op. at 2
- Strike new argumentNew argument disregardedOther
“Consolidated Trial Practice Guide, 90. The Consolidated Trial Practice Guide goes on to state that “[a]bsent a showing of ‘good cause’ prior to filing the request for rehearing or in the request for rehearing itself, new evidence will not be admitted.” Id. (citing Huawei, Paper 19 at 4).” slip op. at 4
- Expert testimonyPetitioner expert creditedDecided for petitioner
“Dr. Baker testifies as to his education and qualifications and provides his curriculum vitae. See Ex. 1002 ¶¶ 3–12; Ex. 1003. At this preliminary stage, we cannot say that Dr. Baker’s scientific, technical, and other specialized knowledge will not be helpful in understanding the evidence. See Fed. R. Evid. 702(a). On this record, we are not persuaded that Dr. Baker’s testimony should be disregarded. Id. at 8. Therefore, even if Dr. Baker were not a person of ordinary skill in the art as Patent Owner contends, it does not follow that he is unqualified to testify in these proceedings. Nothing was misapprehended or overlooked in considering Dr. Baker’s testimony.” slip op. at 6
- Skill levelOther
“(Ex. 2001). In the Preliminary Response, Patent Owner cited the Konda Declaration when discussing the experience and qualifications of the named inventor of the ’523 patent. Prelim. Resp. 8–9. The education level of the inventor, however, is just one of several factors that we may consider in determining the level of ordinary skill in the art. See Daiichi Sankyo Co., Ltd. v. Apotex, Inc., 501 F.3d 1254, 1256 (Fed. Cir. 2007) (enumerating six factors that “may be considered in determining the level of ordinary skill in the art” (quoting Evt’l Designs, Ltd. v. Union Oil Co., 713 F.2d 693, 696 (Fed. Cir. 1983))). And, as Patent Owner noted in the Preliminary Response, “these factors are merely a guide to determining the level of ordinary skill in the art.” Prelim. Resp. 7–8 (citing Daiichi Sankyo, 501 F.3d at 1256). In any event, in the Decision we also considered Petitioner’s and Patent Owner’s proposed definitions of the level of ordinary skill in the art, noted the differences between them, and stated that “[o]ur determination regarding Petitioner’s challenge does not turn on the differences between Petitioner’s and Patent Owner’s definitions.” Dec. 7. Therefore, our evaluation of Petitioner’s challenges and Dr. Baker’s testimony in support thereof would have been the same under Petitioner’s and Patent Owner’s proposed definitions of the level of ordinary skill in the art. See id. (“[W]e note that our conclusions would be same under either definition.”).” slip op. at 7
§ 102 anticipation§ 112 disclosurePatents in suitUS 8,269,523 - Flir Systems, Inc. / Flir Maritime US, Inc. (F/K/A Raymarine, Inc.) v. Garmin Switzerland GmbHSome claims unpatentablePTAB · Jul 10, 2018 · IPR2017-00946 · APJ Scott B Howard · IPR · Final written decision
Claims 28, 29, and 45 were held unpatentable; claims 1–7, 12–23, 25–27, and 41–44 were not shown unpatentable. Substitute claims 73 and 74 were allowed.
RulingsFinal written decision- BurdenFwd mixedMixed
“C. Legal Principles 1. Anticipation A patent claim is unpatentable under 35 U.S.C. § 102 if “the four corners of a single, prior art document describe every element of the claimed invention, either expressly or inherently, such that a person of ordinary skill in the art could practice the invention without undue experimentation.” Advanced Display Sys., Inc. v. Kent State Univ., 212 F.3d 1272, 1282 (Fed. Cir. 2000). “A single prior art reference may anticipate without disclosing a feature of the claimed invention if such feature is necessarily present, or inherent, in that reference.” Allergan, Inc. v. Apotex Inc., 754 F.3d 952, 958 (citing Schering Corp. v. Geneva Pharm., 339 F.3d 1373, 1377 (Fed. Cir. 2003)). Moreover, the reference must also “disclose[] within the four corners of the document not only all of the limitations claimed but also all of the limitations arranged or combined in the same way as recited in the claim.” Net MoneyIN, Inc. v. Verisign, Inc., 545 F.3d 1359, 1371 (Fed. Cir. 2008). However, “the reference need not satisfy an ipsissimis verbis test.” In re Gleave, 560 F.3d 1331, 1334 (Fed. Cir. 2009). We analyze the ground based on anticipation in accordance with the above-stated principles.” slip op. at 22
- Claim Construction › Intrinsic evidence (Phillips canons) › Plain and ordinary meaning to a POSITATerm construed patent owner constructionDecided for patent owner
“and agree with Patent Owner that the terms “re-routing the course” and “re-route the course” mean “to change at least a portion of the route of the course relative to a previous routing.” That is, there must be a first routing of a course and that routing must be changed by performance of the marine route calculation algorithm to avoid preselected conditions by identifying one or more non-user selected waypoints. The construction is consistent with the words of the claims. The claims do not merely require routing a course, but “re-routing the course.” The ordinary meaning of the prefix “re” is that something is being done again. See Tr. 18 (Petitioner agreeing that “if you put R-E in front of a word, normally that means it’s occurring a second time”). Although the claims do not explicitly recite both an original “routing” of a course that is changed by “re-routing the course,” the original “routing” is implicitly required by the use of the prefix “re.” See Tr. 34 (Patent Owner agreeing that although the claims do not explicitly require an initial routing, the initial routing is implicit in the use of “re-routing”), 44–45 (Petitioner agreeing that “re-routing” ordinarily implies an initial routing).” slip op. at 10
- Claim Construction › Threshold & procedure › Whether a term needs construction (O2 Micro)No construction neededDecided for petitioner
“proposed construction of “course” as “the path of intended travel of a craft with respect to the earth.” Instead, we need only focus on the words recited in the claim. Claim 1, which is representative, recites that performing the marine route calculation algorithm to “route a course between a first location and the potential waypoint avoiding the preselected conditions,” where such performance includes “identifying one or more non-user selected waypoints.” Ex. 1001, claim 1. The other independent claims recite similar limitations. See Ex. 1001, claims 12, 20, 27. Based on the limitation recited in the claim, the broadest reasonable interpretation of routing a “course” encompasses the identification of one or more non-user selected waypoints between a first location and a potential waypoint. No further construction is necessary for purposes of this Decision.” slip op. at 17
- Skill levelSkill level petitioner adoptedDecided for petitioner
“We are persuaded by Petitioner’s argument that the person of ordinary skill in the art need not have first-hand experience with marine navigation devices and systems. Pet. Reply 25–26. The ’703 patent explicitly defines “marine navigation” broadly, noting that “the use of the word ‘marine’ in the embodiments of the present invention (including the claims) could be replaced with the phrase ‘non-street based.’” Ex. 1001, 1:57–67 (emphasis added). Such non-street based navigation is broad enough to encompass avionic navigation. See Pet. Reply 25–26; cf. Ex. 1003, 4–7 (demonstrating Dr. Braasch’s experience in avionic navigation). We find that Petitioner’s definition is supported by the testimony of its expert, Dr. Braasch, and, for the reasons stated above, we are not persuaded that the person of ordinary skill in the art necessarily would have had first-hand experience in marine—as opposed to non-street based— navigation. We, therefore, determine, based on the complete record, that Petitioner’s proposed definition correctly states the level of ordinary skill in the art, and we apply it for purposes of this Decision.7, 8” slip op. at 24
Patent outcomesUS 7,268,703 mixedClaim construction§ 102 anticipation§ 103 obviousness§ 112 disclosurecites Phillips · KSR · GrahamPatents in suitUS 7,268,703
Holdings, summaries, rulings, issues, outcomes, winners and claim constructions shown for a decision were generated by a large language model reading the opinion. They are a guide to the decision, not the decision. Confirm every one against the court's own text before relying on it. Outcomes read from the patent owner’s side. Party names are extracted from the decision and are missing on about 900 short Director denials and scans, which carry the trial number instead.