Prosecution Insights
Last updated: April 19, 2026
Application No. 18/174,422

ULTRAVIOLET LIGHT IRRADIATION DEVICE

Non-Final OA §102§103
Filed
Feb 24, 2023
Examiner
SMYTH, ANDREW P
Art Unit
2878
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
USHIO DENKI KABUSHIKI KAISHA
OA Round
1 (Non-Final)
72%
Grant Probability
Favorable
1-2
OA Rounds
2y 11m
To Grant
87%
With Interview

Examiner Intelligence

Grants 72% — above average
72%
Career Allow Rate
616 granted / 856 resolved
+4.0% vs TC avg
Moderate +15% lift
Without
With
+14.9%
Interview Lift
resolved cases with interview
Typical timeline
2y 11m
Avg Prosecution
12 currently pending
Career history
868
Total Applications
across all art units

Statute-Specific Performance

§101
0.6%
-39.4% vs TC avg
§103
59.5%
+19.5% vs TC avg
§102
23.5%
-16.5% vs TC avg
§112
12.8%
-27.2% vs TC avg
Black line = Tech Center average estimate • Based on career data from 856 resolved cases

Office Action

§102 §103
Notice of Pre-AIA or AIA Status The present application, filed on or after March 16, 2013, is being examined under the first inventor to file provisions of the AIA . DETAILED ACTION Claim Rejections - 35 USC § 102 In the event the determination of the status of the application as subject to AIA 35 U.S.C. 102 and 103 (or as subject to pre-AIA 35 U.S.C. 102 and 103) is incorrect, any correction of the statutory basis for the rejection will not be considered a new ground of rejection if the prior art relied upon, and the rationale supporting the rejection, would be the same under either status. The following is a quotation of the appropriate paragraphs of 35 U.S.C. 102 that form the basis for the rejections under this section made in this Office action: A person shall be entitled to a patent unless – (a)(1) the claimed invention was patented, described in a printed publication, or in public use, on sale or otherwise available to the public before the effective filing date of the claimed invention. (a)(2) the claimed invention was described in a patent issued under section 151, or in an application for patent published or deemed published under section 122(b), in which the patent or application, as the case may be, names another inventor and was effectively filed before the effective filing date of the claimed invention. Claim(s) 1-3 and 13 is/are rejected under 35 U.S.C. 102(a)(1) as being anticipated by YAGYU (WO 2021025063 A1). Regarding claim 1, YAGYU discloses an ultraviolet light irradiation device (abstract) (fig. 6, 3, 5, 21) comprising: a light source (3) that emits ultraviolet light belonging to a wavelength band of 200 nm or more and less than 240 nm (abstract) (fig. 7); and an optical filter (21) disposed to allow the ultraviolet light to enter and including a dielectric multilayer film (pg. 6), wherein the optical filter (21) has a transmission spectrum of zero-degree light (fig. 7) including a first transmission band (fig. 7) and a second transmission band (fig. 7) that transmit the zero-degree light and a first restriction band (fig. 7) that restricts transmission of the zero-degree light, the zero-degree light being the ultraviolet light incident on the optical filter (21) with an incident angle of zero degrees, the first transmission band (fig. 7; 0 degree > 15%) is present within the wavelength band of 200 nm or more and less than 240 nm, the second transmission band (fig. 7; 0 degree at approximately > 15%; and/or is 10% greater than the first restriction band (shown as < 5%/at approximately 1-2%), see applicant’s para. [0022]) is present within a wavelength band of more than 300 nm and less than 400 nm, and the first restriction band (fig. 7; 0 degree < 5%) is present over an entire wavelength range of at least 240 nm or more and 300 nm or less, and the first restriction band has an upper limit provided within a range of more than 300 nm and 380 nm or less (fig. 7; between 300nm-320nm at least, 0 degree < 5%) (fig. 6; UV lights 3, 5; optical filter 21) (fig. 7; 0 degree UV light transmission and restriction band transmission % per wavelength nm). (Note from applicant’s specification; para. [0019 Note In the present specification, specific numerical values of the transmittance are not particularly mentioned, and when simply referred to as the “first transmission band” and the “second transmission band”, the transmittance of the optical filter in the “first transmission band” and the “second transmission band” is 15% or more.]) (Note from applicant’s specification; para [0022 Note The transmittance in the second transmission band is “preferably higher” than the maximum transmittance in the first restriction band described later by 10% or more, more preferably higher by 15% or more, and still more preferably higher by 20% or more.]] (Note from applicant’s specification; para [0023 Note In the present specification, unless a specific numerical value is specified for the transmittance of ultraviolet light transmitted through the optical filter, the transmittance of the first restriction band that restricts the transmission of the optical filter is less than 5%]). Regarding claim 2, YAGYU discloses that the first restriction band (fig. 7; 0 degree < 5%) is further present over an entire wavelength range of more than 300 nm and less than 310 nm, and the first restriction band has the upper limit provided within a range of 310 nm or more and 360 nm or less (see fig. 7; 0 degree < 5%). Regarding claim 3, YAGYU discloses that the first restriction band (fig. 7; 0 degree < 5%) is further present over an entire wavelength range of 310 nm or more and less than 320 nm (see fig. 7; 0 degree < 5%). Regarding claim 13, YAGYU discloses that the optical filter (21) has a transmission spectrum of a 50-degree light being the ultraviolet light incident on the optical filter with an incident angle of 50 degrees (fig. 7; 50 degree light) , the transmission spectrum having a third restriction band (fig. 7; 50 degree < 5%) that restricts transmission of the 50-degree light over an entire wavelength range of 240 nm or more and less than 280 nm. Claim Rejections - 35 USC § 103 The following is a quotation of 35 U.S.C. 103 which forms the basis for all obviousness rejections set forth in this Office action: A patent for a claimed invention may not be obtained, notwithstanding that the claimed invention is not identically disclosed as set forth in section 102, if the differences between the claimed invention and the prior art are such that the claimed invention as a whole would have been obvious before the effective filing date of the claimed invention to a person having ordinary skill in the art to which the claimed invention pertains. Patentability shall not be negated by the manner in which the invention was made. 2. Claim(s) 4-6 is/are rejected under 35 U.S.C. 103(a) as being unpatentable over YAGYU (WO 2021025063 A1) in view of (JP 3970942 B2). Regarding claim 4, YAGYU discloses that wherein the second transmission band (fig. 7; 0 degree at approximately > 15%; and/or is 10% greater than the first restriction band (shown as < 5%/at approximately 1-2%), see applicant’s para. [0022]) is further present over an entire wavelength range Regarding claim 5, YAGYU discloses that wherein the second transmission band (fig. 7; 0 degree at approximately > 15%; and/or is 10% greater than the first restriction band (shown as < 5%/at approximately 1-2%), see applicant’s para. [0022]) is further present over an entire wavelength range Regarding claim 6, YAGYU discloses that wherein the second transmission band (fig. 7; 0 degree at approximately > 15%; and/or is 10% greater than the first restriction band (shown as < 5%/at approximately 1-2%), see applicant’s para. [0022]) is further present over an But YAGYU fails to explicitly disclose the second transmission band is further present over an entire wavelength range of 380 nm or more and less than 400 nm; wherein the second transmission band is further present over an entire wavelength range of 360 nm or more and less than 380 nm.; and wherein the second transmission band is further present over an entire wavelength range of 340 nm or more and less than 360 nm (JP 3970942 B2), however, discloses a bandpass filter multilayer stack that is configurable for different wavelength ranges (fig. 11, transmission of UVA and not UVB wavelengths) and that has a transmission band present over an entire wavelength range of 380 nm or more and less than 400 nm (fig. 11); 360nm-380nm (fig. 11); and/or 240nm-360nm (fig. 11). Therefore, it would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention (AIA applications) to combine/modify the invention of YAGYU , with the above claimed filter transmission wavelength ranges, as taught by (JP 3970942 B2), to use for enabling a UV filter configuration that can provide a particular transmission curve(s) of interest (i.e. transmission of UVA (340-380nm) and restriction band of UVB ranges (<300nm) for selected specific applications . 2. Claim(s) 4-6 is/are rejected under 35 U.S.C. 103(a) as being unpatentable over YAGYU (WO 2021025063 A1) in view of DELIWALA (US 20160035914 A1). Regarding claim 4, YAGYU discloses that wherein the second transmission band (fig. 7; 0 degree at approximately > 15%; and/or is 10% greater than the first restriction band (shown as < 5%/at approximately 1-2%), see applicant’s para. [0022]) is further present over an entire wavelength range Regarding claim 5, YAGYU discloses that wherein the second transmission band (fig. 7; 0 degree at approximately > 15%; and/or is 10% greater than the first restriction band (shown as < 5%/at approximately 1-2%), see applicant’s para. [0022]) is further present over an entire wavelength range Regarding claim 6, YAGYU discloses that wherein the second transmission band (fig. 7; 0 degree at approximately > 15%; and/or is 10% greater than the first restriction band (shown as < 5%/at approximately 1-2%), see applicant’s para. [0022]) is further present over an But YAGYU fails to explicitly disclose the second transmission band is further present over an entire wavelength range of 380 nm or more and less than 400 nm; wherein the second transmission band is further present over an entire wavelength range of 360 nm or more and less than 380 nm.; and wherein the second transmission band is further present over an entire wavelength range of 340 nm or more and less than 360 nm DELIWALA, however, discloses a bandpass multilayer filter stack that is configurable for different wavelength ranges [0007] and that has a transmission band present over an entire wavelength range of 380 nm or more and less than 400 nm; 360nm-380nm; and/or 240nm-360nm (fig. 7; 704) [0007]. Therefore, it would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention (AIA applications) to combine/modify the invention of YAGYU , with the above claimed filter transmission wavelength ranges, as taught by DELIWALA, to use for enabling a UV filter configuration that can provide a particular transmission curve(s) of interest [0007] for selected specific applications [0007]. 2. Claim(s) 7-9 and 14-17 is/are rejected under 35 U.S.C. 103(a) as being unpatentable over YAGYU (WO 2021025063 A1) in view of IMAMURA et al. (WO 2022039216 A1). Regarding claims 7-9, YAGYU discloses that the transmission spectrum of the zero-degree light further has a second restriction band (fig. 7; 0 degree < 5%) that restricts transmission of the zero-degree light in a wavelength band of But YAGYU fails to disclose second restriction band that restricts transmission of the zero-degree light in a wavelength band of 200 nm or more and 210 m or less. IMAMURA, however, discloses a UV light optical bandpass filter for 0 degree UV light (fig. 8) that has a restriction band from 240nm-280nm and a second restriction band (fig. 8; 0 degree < 5%) that restricts transmission of the zero-degree light in a wavelength band of 200 nm or more and 210 m or less (fig. 8, from 200nm-~ 205nm at least). Therefore, it would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention (AIA applications) to combine/modify the invention of YAGYU, with an optical bandpass filter configuration that has a restriction band that restricts transmission of the zero-degree light in a wavelength band of 200 nm or more and 210 m or less, as taught by IMAMURA, to use to mitigate undesired UV light wavelengths per specific application. Regarding claim 14, YAGYU discloses wherein the dielectric multilayer film (21) includes a laminate in which high refractive index layers and low refractive index layers are may have” (Note claim limitations that “may” exist, also “may not” exist and are therefore not further limiting). But YAGYU fails to disclose the dielectric multilayer film includes a laminate in which high refractive index layers and low refractive index layers are alternately laminated, and the laminate “may” have a film thickness of 1.0 µm or more and 3.0 µm or less. IMAMURA, however, discloses an optical bandpass filer composed of a dielectric multilayer film (fig. 1; 3, composed of 5, 4) includes a laminate (pgs. 3-4) in which high refractive index layers (4) and low refractive index layers (5) are alternately laminated (pgs. 3-4), and the laminate has a film thickness of 1.0 µm or more and 3.0 µm or less (pgs. 3-4) (pg. 4). Therefore, it would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention (AIA applications) to combine/modify the invention of YAGYU, with the above claimed dielectric multilayer film, as taught by IMAMURA, to use as a substitution of one known filter configuration (i.e. dielectric multilayer film that includes a laminate in which high refractive index layers and low refractive index layers are alternately laminated, and the laminate has a film thickness of 1.0 µm or more and 3.0 µm or less) for another to obtain predictable UV light transmission and restriction filtering results. Moreover, regarding claim 15, IMAMURA discloses that the laminate (fig. 1; 3, composed of 5, 4) has a film thickness of 1.0 μm or more and 2.0 μm or less (pgs. 4 and 8) (pg. 4, Note thickness of 1000nm or more) . (fig. 1; dielectric multilayer film 3, composed of 5, 4) (Note Hf02 Hafnium oxide, also known as hafnium dioxide. Note SiO2 Silicon dioxide, also known as silica); and is obvious for the reasons discussed supra with reference to claim(s) 14, see previous. Moreover, regarding claim 16, IMAMURA discloses that the laminate (fig. 1; 3, 4, 5) has HfO2 layers (4) (pgs. 3-4) and SiO2 layers (5) (pgs. 3-4) alternately laminated (pgs. 3-4) , and the HfO2 layers that are all included in the laminate have a total thickness of 0.5 μm or more and less than 2.0 μm (pg. 4) ; and is obvious for the reasons discussed supra with reference to claim(s) 14, see previous. Moreover, regarding claim 17, IMAMURA discloses that the laminate (fig. 1; 3, 4, 5) has HfO2 layers (4) (pgs. 3-4) and SiO2 layers (5) (pgs. 3-4) alternately laminated, and the HfO2 layers that are all included in the laminate have a total thickness of 0.5 μm or more and less than 2.0 μm (pg. 4) ; and is obvious for the reasons discussed supra with reference to claim(s) 14 and/or 15, see previous. 2. Claim(s) 10-12 is/are rejected under 35 U.S.C. 103(a) as being unpatentable over YAGYU (WO 2021025063 A1) in view of either of (JP 3970942 B2) or DELIWALA (US 20160035914 A1), hereinafter “the combined references”, as applied respectively to claims 4-6 above;, and further in light of IMAMURA et al. (WO 2022039216 A1). Regarding claims 10-12, YAGYU discloses that the transmission spectrum of the zero-degree light further has a second restriction band (fig. 7; 0 degree < 5%) that restricts transmission of the zero-degree light in a wavelength band of But the combined references fail to disclose second restriction band that restricts transmission of the zero-degree light in a wavelength band of 200 nm or more and 210 m or less. IMAMURA, however, discloses a UV light optical bandpass filter for 0 degree UV light (fig. 8) that has a restriction band from 240nm-280nm and a second restriction band (fig. 8; 0 degree < 5%) that restricts transmission of the zero-degree light in a wavelength band of 200 nm or more and 210 m or less (fig. 8, from 200nm-~ 205nm at least). Therefore, it would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention (AIA applications) to combine/modify the invention of the combined references, with an optical bandpass filter configuration that has a restriction band that restricts transmission of the zero-degree light in a wavelength band of 200 nm or more and 210 m or less, as taught by IMAMURA, to use to mitigate undesired UV light wavelengths per specific application. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to Andrew Smyth whose telephone number is 571-270-1746. The examiner can normally be reached between 9:00AM - 6:00PM; Monday thru Friday. If attempts to reach the examiner by telephone are unsuccessful, the examiner’s supervisor, Georgia Epps can be reached on (571) 272-2328. The fax phone number for the organization where this application or proceeding is assigned is 571-273-8300. Information regarding the status of an application may be obtained from the Patent Application Information Retrieval (PAIR) system. Status information for published applications may be obtained from either Private PAIR or Public PAIR. Status information for unpublished applications is available through Private PAIR only. For more information about the PAIR system, see http://pair-direct.uspto.gov. Should you have questions on access to the Private PAIR system, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). If you would like assistance from a USPTO Customer Service Representative or access to the automated information system, call 800-786-9199 (IN USA OR CANADA) or 571-272-1000. /ANDREW SMYTH/Primary Examiner, Art Unit 2881
Read full office action

Prosecution Timeline

Feb 24, 2023
Application Filed
Feb 05, 2026
Non-Final Rejection — §102, §103 (current)

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Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

1-2
Expected OA Rounds
72%
Grant Probability
87%
With Interview (+14.9%)
2y 11m
Median Time to Grant
Low
PTA Risk
Based on 856 resolved cases by this examiner. Grant probability derived from career allow rate.

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