- Weatherford U.S., L.P v. Halliburton Energy Services, Inc.Some claims unpatentablePTAB · Dec 9, 2025 · IPR2024-00990 · APJ Brent M Dougal · IPR · Final written decision
Claims 11–12 and 14–20 are unpatentable; claims 1–10 and 21–23 are not shown unpatentable. Substitute claims 29–37 are unpatentable, and the motion to amend is denied as to them.
RulingsFinal written decision- Skill levelSkill level petitioner adoptedDecided for petitioner
“The level of skill is uncontested. Patent Owner adopts the level of skill identified by Petitioner as: [at] the time of the alleged invention in 2018, a POSITA[2] would have had a B.S. degree in mechanical or petroleum engineering or a similar technical discipline, with at least five years of experience in oil or gas well drilling, completion, and/or subsurface production operations or in technical support of such operations including at least some experience in unconsolidated formations utilizing sand control methods and means. Also,” slip op. at 8
- Obviousness (§103) › Graham factors (scope of art, differences, level of skill)UnpatentableNot shown unpatentableMixed
“on embodiments of Yeh with concentric sand screens having nine shunt tubes (six transport tubes and three packing tubes) (Yeh Figures 4A–B) and eccentric sand screens with four shunt tubes (two transport tubes and two packing tubes) (Yeh Figures 8A, 8C). See Pet. 32–37, 39, 41–43. Yet, Petitioner’s reasoning as to why “a higher-pressure shunt tube assembly necessitated greater wall thickness” rests on an unspoken one to one comparison between the shunt tubes of the different systems. See id.; see also Ex. 1003 ¶¶ 291–297 (Petitioner’s declarant comparing possible transport tubes of different pressure regions without considering or addressing any difference in the number of transport tubes). However, the embodiments relied on by Petitioner have different numbers of shunt tubes, and thus the greater wall thickness does not appear to be “necessitated” in the way inferred by Petitioner. Further, Petitioner’s analysis would seem to be most appropriate when comparing two concentric sand screens for different pressure regions, or two eccentric sand screens for different pressure regions. relies on Yeh’s teachings related to a horizontal well bore of 5000 feet for the “concentric screen → crossover tool → eccentric screen” arrangement, as well as, for why the concentric screen needs to be rated for a high pressure. Pet. 32–37, 39, 41–43. Petitioner also refers to these features for why one of skill in the art would combine the teachings of Yeh and Yeh2. Id. at 32. However, on cross-examination, Petitioner’s declarant agreed that it is concentric sand screens having a 6x3 shunt tube design that would provide the noted benefits of being rated for a higher pressure and being more robust (as relied on in the Petition), as compared to eccentric sand screens. Ex. 2013, 42:20–43:8; Sur-reply 4–5. This also exposes another issue with Petitioner’s arguments. Though Petitioner identifies that one of skill in the art would be aware that material choice, wall thickness, and pipe diameter all impact burst pressure of a pipe (Pet. 42 (citing Ex. 1017, 24 (Equation (14))), the Petition essentially ignores the fact that the claims do not require a single pipe in isolation. The claims require two shunt tube assemblies, each surrounding a base pipe within a wellbore. It is uncontested that a wellbore provides a confined space for such a system and thus any change in wall thickness of one pipe can result in a significant impact in the function of the other pipes. We find the testimony of Petitioner’s declarant (see, e.g., Ex. 1003 ¶¶ 290–297) unpersuasive when discussing wall thickness because it focusses on basic considerations of a standalone pipe, without sufficient consideration of the claimed completion assembly with its required pipe and tube structure. PO Resp. 20–26.” slip op. at 17
- Strike new argumentNew argument disregardedDecided for patent owner
“In response to Patent Owner’s argument concerning Yeh’s embodiments relied on in the Petition, Petitioner argues for the first time that Patent Owner’s declarant “conceded, Yeh discloses that both concentric and 47:19–48:21). Petitioner does not provide a citation to Yeh or a citation to where the Petition relies on the same number of shunt tubes between concentric and eccentric screens. The deposition cited by Petitioner discusses Yeh at column 16, lines 26 through 35. However, the Petition does not cite or rely on these teachings of Yeh. Thus, we decline to consider this late argument.4 See 35 U.S.C. § 312(a)(3) (requiring the petition to identify “with particularity . . . the grounds on which the challenge to each claim is based, and the evidence that supports the grounds”); 37 C.F.R. § 42.104(b)(5).” slip op. at 18
- Obviousness (§103) › Motivation to combine / reasonable expectation of successMotivation foundUnpatentable
“Thus, we agree with Petitioner that the combination of Yeh and Yeh2 teaches determining the shunt tube system operating pressures associated with the distal end of the production zone, but also more generally, determining the operating pressures along the entire production zone. With this knowledge of the system operating pressures, Petitioner argues that one of skill in the art would have selected eccentric screens for the distal end of the production zone “at any point at which the slurry pressure dropped below the pressure capacity of the eccentric screen shunt tubes.” Pet. 66 (citing Ex. 1005, 30:16–20; Ex. 1003 ¶ 388). In other words, knowing that the pressure decreases as you approach the toe, Yeh’s low-pressure rated eccentric screens could be used from some point prior to and covering the toe. determined pressure.” PO Resp. 37–38. We disagree. As discussed above, the record supports Petitioner’s position that one of skill in the art would have “understood the need to determine the shunt tube system operating pressure throughout the horizontal wellbore.” Ex. 1003 ¶ 383; see also Pet. 64–65. We find convincing Petitioner’s argument that one of skill with this understanding of the system pressures would select a shunt tube system rated to not only address the distal end, but also to address the needs of the adjacent region, so long as the pressure rating supported such a selection. See Pet. 65–67; Ex. 1003 ¶¶ 385–388.” slip op. at 22
Patent outcomesUS 11,333,007 mixedClaim construction§ 101 eligibility§ 103 obviousness§ 112 disclosurecites GrahamPatents in suitUS 11,333,007 - Metacluster LT, Uab v. Bright Data Ltd.InstitutedPTAB · Mar 23, 2023 · PGR2022-00052 · APJ Sheila F Mcshane · PGR · Institution
Instituted PGR on claims 1–27; the Board found it more likely than not that the claims are obvious over Mithyantha, with claim 19 also challenged over Mithyantha and RFC 2616.
RulingsInstitution decision- PTAB / AIA Trials › Institution threshold (reasonable likelihood / more likely than not)InstitutedInstituted
“We may not institute a post-grant review “unless . . . the information presented in the petition filed under section 321, if such information is not rebutted, would demonstrate that it is more likely than not that at least 1 of the claims challenged in the petition is unpatentable.” 35 U.S.C. § 324(a). Upon consideration of the arguments and evidence, we determine Petitioner has demonstrated that it is more likely than not that at least one of the challenged claims is unpatentable. Accordingly, we institute a post-grant review of the challenged claims of the ’034 patent.” slip op. at 2
- Skill levelSkill level petitioner adoptedDecided for petitioner
“had at least a bachelor’s degree in Computer Science or related field (or equivalent experience), and at least two years’ experience working with and programming networked computer systems.” Pet. 13 (referencing Ex. 1002 ¶ 33).” slip op. at 8
- Prior constructionPrior construction adoptedDecided for petitioner
“The district court considered the issue of whether a client device, for instance, should be construed in a role-based or structural manner, and the evaluation included whether a device could sometimes be operated as a client and at other times could operate as something else. Ex. 1018, 48–51. In support, the district pointed the patent disclosure that: Any network element in the system may be a dedicated device that assumes only a single role, and thus being only a client (using tunnels), a tunnel, a client (using agents/ peers), an agent, or a peer device. Alternatively or in addition, a network element may be capable of assuming two or more roles, either at different times or simultaneously, from the list of roles including a client (using tunnels), a tunnel, a client (using agents/peers), an agent, or a peer device. Alternatively or in addition, a device may be capable of assuming all of the above roles. Ex. 1018, 50 (quoting ’866 patent at 125:33–42, with identical disclosure in ’034 patent (Ex. 1001, 125:24–33)).” slip op. at 10
- Obviousness (§103) › Graham factors (scope of art, differences, level of skill)Instituted
“At this stage of the proceedings, we do not agree that Mithyantha’s second appliance 200’/200b cannot be considered the claimed “second client device” and its first appliance 200/200a cannot be considered the claimed “third server.” As discussed supra Section II.C, we have adopted the district court’s constructions of claim terms. More specifically, the district court determined, and we concur based on the present record, that “client device” is “a device that is operating in the role of a client by requesting services, functionalities, or resources from other devices” and a “first server” functions as “a server that is not the client device.” On this record, Petitioner has demonstrated that Mithyantha’s second appliance 200’/200b functions as the claimed “second client device,” as it operates as a client by requesting services, functionalities, or resources from other devices, that is, it transmits HTTP web requests over the network to a server. See Pet. 44– 45. Mithyantha also discloses that its first appliance 200/200a functions in a server role, with appliance 200/200a sending back responses to client 102a, that is, content from the web server, and it is a separate element from a client device. See id. at 41–42. Moreover, as discussed above, Petitioner’s assertions are consistent with the role-based nature of the elements as disclosed in the ’034 patent. Further, we do not find that Petitioner’s applications of the claim elements to Mithyantha are arbitrary because they are consistent with the district court’s claim construction of the respective claimed elements and the elements’ functions and roles, as discussed. Moreover, Mithyantha discloses that its appliances can provide different functions (see e.g. Ex. 1009, 5:31–33, 8:65–67, 9:8–21, 9:53–55; 23:58–64), and may be implemented in many forms. That is, the implementation of appliance 200 is generally described as being on any form of computing device such as “computing device 100,” and “computing device 100 can be any workstation, desktop computer, laptop or notebook computer, server, handheld computer, mobile telephone.” See id. at 13:65– 142, 16:58–64. We do not agree with Patent Owner’s allegations regarding a required architecture. Patent Owner does not explain how these requirements are recited in the limitations of claims. Instead, at this juncture, it appears that the arguments are an attempt to impermissibly introduce limitations into the claim that are not recited. Similarly, we do not agree with Patent Owner’s arguments on required anonymity because this requirement is not recited in the claims.” slip op. at 18
Claim construction§ 101 eligibility§ 103 obviousnesscites Alice · Mayo · KSR · GrahamPatents in suitUS 11,272,034
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.