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  • PTAB · Jan 23, 2026 · IPR2025-00748 · APJ Sean P O’Hanlon · IPR · Final written decision

    Claim 15 was not shown unpatentable under § 103 over Gallagher and Lumia because Petitioner did not persuasively explain why a skilled artisan would combine their teachings.

    RulingsFinal written decision
    • Skill levelSkill level petitioner adoptedDecided for petitioner

      “The parties disagree only on the length of experience an ordinarily skilled artisan would have, with Petitioner contending four years and Patent Owner contending two years. As noted by Petitioner, Patent Owner’s witness, Dr. Papanikolopoulos, does not provide an explanation for his opinion or support his definition of the level of ordinary skill with citations to evidence. See Ex. 2023 ¶ 57 (“In my opinion, [Petitioner’s definition] is an excessive level of ordinary skill in the art, and I believe instead [an ordinarily skilled artisan] would more likely have two years of experience rather than four years.”). On the other hand, Petitioner’s witness, Dr. Thorpe, does provide an explanation for his opinion, explaining that his assertion that four years of experience is required is based on the state of the art, typical undergraduate curricula, and his supervision of doctoral students. Ex. 1030 ¶ 23. Based on the arguments presented and the cited references, we find Petitioner’s definition of the level of ordinary skill reasonable and for purposes of this Decision, adopt it as our own. We note that we would reach the same conclusions under either proposed standard.” slip op. at 10

    • Claim Construction › Threshold & procedure › Whether a term needs construction (O2 Micro)No construction neededOther

      “The Board is required to construe ‘only those terms . . . that are in controversy, and only to the extent necessary to resolve the controversy.’” Realtime Data, LLC v. Iancu, 912 F.3d 1368, 1375 (Fed. Cir. 2019) (alteration in original) (quoting Vivid Techs., Inc. v. Am. Sci. & Eng’g, Inc., 200 F.3d 795, 803 (Fed. Cir. 1999)). For purposes of this Decision, we determine that no construction of any term is necessary. slip op. at 13

    • Obviousness (§103) › Motivation to combine / reasonable expectation of successMotivation not foundNot shown unpatentableNot shown unpatentable

      “We agree with Patent Owner that Petitioner has not articulated persuasive reasoning for combining the teachings of Gallagher and Lumia. Petitioner argues that implementing Lumia’s teaching of determining the luminance of traffic signs in Gallagher’s system would allow Gallagher’s system to calculate the retroreflectivity of road markers as a means of identifying any markers that do not meet minimum acceptable reflectance levels for countries that require a minimum retroreflectivity level for road markers. Pet. 46 (citing Ex. 1003 ¶ 116; Ex. 1005 ¶¶ 49, 77; Ex. 1019, 6, 8–11).7 However, Gallagher already discloses determining whether the 7 Petitioner and Dr. Thorpe cite to the original pagination of Exhibit 1019 rather than the added exhibit pagination. reflectance level of each road marker meets a predetermined minimum acceptable reflectance level and tagging those road markers that do not meet the minimum acceptable reflectance level to identify them for replacement. See, e.g., Ex. 1005 ¶¶ 3, 67–68; see also id. ¶¶ 12–13, 18, 21, 49, 51, 76, 79, Fig. 5. Indeed, both Petitioner and Dr. Thorpe describe Gallagher’s system as ensuring that road markers meet minimum retroreflectivity standards: “Gallagher’s apparatus tests ‘road markings and road markers such as, for example, road signs and posts, reflective painted lines whether continuous or broken, and . . . raised pavement markers’ ‘to ensure they continue to meet minimum standards of reflectivity/retroreflectivity.’” Pet. 9 (alteration in original) (emphasis added) (citing Ex. 1005 ¶¶ 3, 6, 31–33); Ex. 1003 ¶ 55 (alteration in original) (emphasis added) (citing Ex. 1005 ¶¶ 3, 6, 31–33). Thus, we agree with Patent Owner that Petitioner has not identified persuasively why an ordinarily skilled artisan would have modified Gallagher’s system to include Lumia’s process for measuring retroreflectivity of traffic signs.” slip op. at 19

    • Strike new argumentNew argument disregardedDecided for patent owner

      “coefficient of luminous intensity rather than the coefficient of retroreflectivity, and Lumia teaches how to calculate retroreflectivity based on the coefficient of luminance intensity. Pet. Reply 20–21. During the hearing, counsel for Petitioner clarified that this reliance on Lumia entails using the equations disclosed in Lumia without altering Gallagher’s hardware. Tr. 27:18–29:24. During his deposition , Dr. Thorpe confirmed that this obviousness theory relies only on Lumia’s equations. See Ex. 2025, 60:5–65:2. This is an improper new argument. See, e.g., Henny Penny Corp. v. Frymaster LLC, 938 F.3d 1324, 1330–31 (Fed. Cir. 2019) (“[A]n IPR petitioner may not raise in reply ‘an entirely new rationale’ for why a claim would have been obvious.”). Notably, this new obviousness theory appears to stem from Patent Owner’s witness, Dr. Papanikolopoulos, noting differences in Gallagher’s and Lumia’s disclosures. See Pet. Reply 21 (citing Ex. 2023 ¶¶ 71 n.2, 89). Even considering Petitioner’s new theory, we find it unpersuasive because Petitioner does not explain adequately how the “determining a luminance value” recitation is met. Per Petitioner, Gallagher measures the coefficient of luminous intensity, but Petitioner does not identify a “luminance value” as recited in claim 15. Dr. Papanikolopoulos testifies that the coefficient of luminous intensity is not a luminance value: “As is well established, coefficient of luminous intensity—which is what Gallagher calculates—is a measurement of retroreflectivity (usually expressed in units of candelas, or millicandelas, per lux per square meter, i.e., cd/lx/m2), not luminance (usually expressed in candelas per square meter, i.e., cd/m2). Ex. 2023 ¶ 91. Petitioner’s witness, Dr. Thorpe, does not contest this testimony. See, e.g., Ex. 1030 ¶ 35. Thus, Petitioner’s new theory is unpersuasive.” slip op. at 20

    Patent outcomesUS 9,335,255 not shown unpatentable
    Claim construction§ 103 obviousnesscites KSR · Graham
    Patents in suitUS 9,335,255
  • PTAB · Jan 23, 2026 · IPR2024-01110 · APJ Sean P O’Hanlon · IPR · Final written decision

    Claim 15 was not shown unpatentable under § 103 over Gallagher and Lumia because Petitioner did not persuasively explain why a skilled artisan would combine their teachings.

    RulingsFinal written decision
    • Skill levelSkill level petitioner adoptedDecided for petitioner

      “The parties disagree only on the length of experience an ordinarily skilled artisan would have, with Petitioner contending four years and Patent Owner contending two years. As noted by Petitioner, Patent Owner’s witness, Dr. Papanikolopoulos, does not provide an explanation for his opinion or support his definition of the level of ordinary skill with citations to evidence. See Ex. 2023 ¶ 57 (“In my opinion, [Petitioner’s definition] is an excessive level of ordinary skill in the art, and I believe instead [an ordinarily skilled artisan] would more likely have two years of experience rather than four years.”). On the other hand, Petitioner’s witness, Dr. Thorpe, does provide an explanation for his opinion, explaining that his assertion that four years of experience is required is based on the state of the art, typical undergraduate curricula, and his supervision of doctoral students. Ex. 1030 ¶ 23. Based on the arguments presented and the cited references, we find Petitioner’s definition of the level of ordinary skill reasonable and for purposes of this Decision, adopt it as our own. We note that we would reach the same conclusions under either proposed standard.” slip op. at 10

    • Claim Construction › Threshold & procedure › Whether a term needs construction (O2 Micro)No construction neededOther

      “The Board is required to construe ‘only those terms . . . that are in controversy, and only to the extent necessary to resolve the controversy.’” Realtime Data, LLC v. Iancu, 912 F.3d 1368, 1375 (Fed. Cir. 2019) (alteration in original) (quoting Vivid Techs., Inc. v. Am. Sci. & Eng’g, Inc., 200 F.3d 795, 803 (Fed. Cir. 1999)). For purposes of this Decision, we determine that no construction of any term is necessary. slip op. at 13

    • Obviousness (§103) › Motivation to combine / reasonable expectation of successMotivation not foundNot shown unpatentableNot shown unpatentable

      “We agree with Patent Owner that Petitioner has not articulated persuasive reasoning for combining the teachings of Gallagher and Lumia. Petitioner argues that implementing Lumia’s teaching of determining the luminance of traffic signs in Gallagher’s system would allow Gallagher’s system to calculate the retroreflectivity of road markers as a means of identifying any markers that do not meet minimum acceptable reflectance levels for countries that require a minimum retroreflectivity level for road markers. Pet. 46 (citing Ex. 1003 ¶ 116; Ex. 1005 ¶¶ 49, 77; Ex. 1019, 6, 8–11).7 However, Gallagher already discloses determining whether the 7 Petitioner and Dr. Thorpe cite to the original pagination of Exhibit 1019 rather than the added exhibit pagination. reflectance level of each road marker meets a predetermined minimum acceptable reflectance level and tagging those road markers that do not meet the minimum acceptable reflectance level to identify them for replacement. See, e.g., Ex. 1005 ¶¶ 3, 67–68; see also id. ¶¶ 12–13, 18, 21, 49, 51, 76, 79, Fig. 5. Indeed, both Petitioner and Dr. Thorpe describe Gallagher’s system as ensuring that road markers meet minimum retroreflectivity standards: “Gallagher’s apparatus tests ‘road markings and road markers such as, for example, road signs and posts, reflective painted lines whether continuous or broken, and . . . raised pavement markers’ ‘to ensure they continue to meet minimum standards of reflectivity/retroreflectivity.’” Pet. 9 (alteration in original) (emphasis added) (citing Ex. 1005 ¶¶ 3, 6, 31–33); Ex. 1003 ¶ 55 (alteration in original) (emphasis added) (citing Ex. 1005 ¶¶ 3, 6, 31–33). Thus, we agree with Patent Owner that Petitioner has not identified persuasively why an ordinarily skilled artisan would have modified Gallagher’s system to include Lumia’s process for measuring retroreflectivity of traffic signs.” slip op. at 19

    • Strike new argumentNew argument disregardedDecided for patent owner

      “coefficient of luminous intensity rather than the coefficient of retroreflectivity, and Lumia teaches how to calculate retroreflectivity based on the coefficient of luminance intensity. Pet. Reply 20–21. During the hearing, counsel for Petitioner clarified that this reliance on Lumia entails using the equations disclosed in Lumia without altering Gallagher’s hardware. Tr. 27:18–29:24. During his deposition , Dr. Thorpe confirmed that this obviousness theory relies only on Lumia’s equations. See Ex. 2025, 60:5–65:2. This is an improper new argument. See, e.g., Henny Penny Corp. v. Frymaster LLC, 938 F.3d 1324, 1330–31 (Fed. Cir. 2019) (“[A]n IPR petitioner may not raise in reply ‘an entirely new rationale’ for why a claim would have been obvious.”). Notably, this new obviousness theory appears to stem from Patent Owner’s witness, Dr. Papanikolopoulos, noting differences in Gallagher’s and Lumia’s disclosures. See Pet. Reply 21 (citing Ex. 2023 ¶¶ 71 n.2, 89).” slip op. at 20

    Patent outcomesUS 9,335,255 not shown unpatentable
    Claim construction§ 103 obviousnesscites KSR · Graham
    Patents in suitUS 9,335,255

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