Prosecution Insights
Last updated: April 19, 2026
Application No. 18/578,067

OBJECTIVE LENS AND SAMPLE ANALYZER

Non-Final OA §103
Filed
Jan 10, 2024
Examiner
AKANBI, ISIAKA O
Art Unit
2877
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Sony Group Corporation
OA Round
1 (Non-Final)
76%
Grant Probability
Favorable
1-2
OA Rounds
2y 8m
To Grant
99%
With Interview

Examiner Intelligence

Grants 76% — above average
76%
Career Allow Rate
814 granted / 1071 resolved
+8.0% vs TC avg
Strong +23% interview lift
Without
With
+23.4%
Interview Lift
resolved cases with interview
Typical timeline
2y 8m
Avg Prosecution
34 currently pending
Career history
1105
Total Applications
across all art units

Statute-Specific Performance

§101
2.6%
-37.4% vs TC avg
§103
39.7%
-0.3% vs TC avg
§102
43.9%
+3.9% vs TC avg
§112
5.4%
-34.6% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1071 resolved cases

Office Action

§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 Information Disclosure Statement The information disclosure statement filed on 01/10/2024, 11/14/2024 and 12/03/2024 has been entered and considered by the examiner. Drawings The drawings filed on 01/10/2024, has been accepted for examination. 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. Claims 1-17 is/are rejected under 35 U.S.C. 103 as being unpatentable over Sauter et al. (2006/0152823 A1) in view of Fujita (2013/0222920 A1). Regarding claims 1, 7 and 8, Sauter teaches of an objective lens is microscope objectives included in lens system (figs. 1-3) intended use (i.e. used in a sample analyzer (claim 7) cytometer that detects light in a plurality of wavelength bands such as in the fluorescence or other electromagnetic radiation [pars. 0001-8] from particles such as particles of interest flowing through a flow channel (claim 8)/flow cell, wherein the objective lens the microscope objective that is included in the lens system (figs. 1-3; 100/200/300), as can be seen in depicted drawing (figs. 1-3) is provided in proximity to the flow channel/flow cell 104 [pars. 0001-8], and the objective lens the microscope objective that is included in the lens system (figs. 1-3; 100/200/300) obviously has some sort of a ratio of a converted optical path length L to a focal length f of the objective lens in a dry system that satisfying some sort of Mathematical Expression, wherein the converted optical path length L denotes a distance from a lens surface on a side of the flow channel/flow cell to a center of the flow channel converted into a distance in the dry system, as can be seen in depicted drawing (figs. 1-3) to ensure proper collection and delivery of signal to a photo-detection/detection system; an objective lens microscope objectives included in lens system (figs. 1-3) that is intended use to condenses light generated by irradiating particles flowing through a flow channel with light; a detection unit a photo-detection block (comprising a plurality of sensing devices) that collect signal from microscope objectives to a photo-detection block [pars. 0003, 0008] detects light from the objective lens (claim 7). Sauter fail to explicitly specify the dry system satisfying Mathematical Expression such as Expression (1) below, where the converted optical path length L denotes a distance from a lens surface on a side of the flow channel to a center of the flow channel converted into a distance in the dry system: 0.15< L/f >0.45 …. (1) Fujita from the same field of field of endeavor teaches of microscope objective lens has a ratio of a converted optical path length L to a focal length f of the objective lens in a dry system that satisfying Mathematical Expression such as Expression (1) 0.15< L/f >0.45 is (1/1.59108 + 1.735) / 8.97 = 0.26) (Fujita, [pars. 0045-47]), it would have been obvious before the effective filing date of the claimed invention to a person having ordinary skill in the art to modify Sauter as desired appropriate such as in the manner set forth in applicant’s claim(s), in view of the teaching of Fujita in order to enhanced and realized accurate detection of the different samples/species and/or identifying the unknown samples, and/or in order to realized excellent correction for variations in the spherical aberrations caused by variations in the thickness of cover glass CG, as per teachings of Fujita (Fujita, [pars. 0031]). Therefore, it would have been obvious before the effective filing date of the claimed invention to a person having ordinary skill in the art to Sauter as desired appropriate such as in the manner set forth in applicant’s claim(s), in view of the teaching of Fujita in order to enhanced and realized accurate detection of the different samples/species and/or identifying the unknown samples, and/or in order to realized excellent correction for variations in the spherical aberrations caused by variations in the thickness of cover glass CG, as per teachings of Fujita (Fujita, [pars. 0031]), since it has been held that the provision of adjustability, where needed, involves only routine skill in the art, In re Stevens, 101 USPQ 284 (CC1954). For the purpose of clarity, the structure recited in claim 7 and 8 is/are symmetrical to the structure recited in claim 1, as such, the device/system claim 1 structure provide the means for the device claims 7 and 8 as rejected above as being unpatentable over Sauter in view of Fujita. As to claims 2-4, Sauter when the modified by Fujita, Fujita also teaches of microscope objective lens system structure that is use in a method/system that is implementing limitations such as, wherein the objective lens microscope objective lens includes a positive lens located closest to the flow channel, and a refractive index nd and an Abbe number Vd of the positive lens satisfy Mathematical Expressions and below: 1.67 <nd< 1.81 and 38< vd , is render obvious as can be seen in depicted drawing (fig.1; L 1) [pars. 0047-48]), where nd in Mathematical Expression (2) denotes a refractive index at a d-line and Vd in Mathematical Expression (3) denotes an Abbe number at the d-line (claim 2); wherein the objective lens microscope objective lens includes positive lenses, and a refractive index nd, an Abbe number Vd, and a partial dispersion ratio PgF of three or more of the positive lenses satisfy Mathematical Expressions below: nd<1.52 , 79 <vd , PgF < 0.54 is render obvious as can be seen in depicted drawing (fig.1; L3,L5,L6, the only lens materials satisfying the disclosed nd and vd also satisfy the claimed PgF, e.g. HOYA FCD100, PgF=0.533)) [pars. 0047-48]), where nd in Mathematical Expression denotes the refractive index at the d-line and Vd in Mathematical Expression denotes the Abbe number at the d-line (claim 3); and wherein the objective lens includes negative lenses, and a refractive index nd and an Abbe number Vd of three or more of the negative lenses satisfy Mathematical Expressions below: n1a< 1.78; 29<vd is render obvious as can be seen in depicted drawing (fig.1; L4, L8, L9) [pars. 0047-48]), where nd in Mathematical Expression denotes the refractive index at the d-line and Vd in Mathematical Expression denotes the Abbe number at the d-line (claim 4). As to claim 5, Sauter when the modified by Fujita, Fujita also teaches of microscope objective lens system structure that is use in a method/system that is implementing limitations such as, wherein the objective lens microscope objective that is included in the lens system (figs. 1-3; 100/200/300), as can be seen in depicted drawing (figs. 1-3) includes an aspheric lens having an aspheric shape obviously in teams of the lens system ability to correct for spherical aberration [pars. 0031-34]. Sauter when the modified by Fujita fail to specify the constructional change Expression for aspheric lens having an aspheric shape represented by some sort of Expression below: PNG media_image1.png 98 582 media_image1.png Greyscale in Expression, Z denotes a coordinate of an aspheric surface in a direction of an optical axis, h denotes a coordinate of the aspheric surface in a direction orthogonal to the optical axis, k denotes a conic constant, r denotes a paraxial curvature radius of the aspheric surface, and A, B, and C in Expression denote fourth- order, sixth-order, and eighth-order aspheric coefficients, respectively. However, even though, Sauter when the modified by Fujita fail to teach the constructional changes in the objective lens of claim 1, as that claimed by Applicant’s claims 5, the constructional change(s) is/are considered obvious conventional measure use to help reducing aberrations. It would have been obvious before the effective filing date of the claimed invention to a person having ordinary skill in the art to modify Sauter when the modified by Fujita as desired appropriate such as in the manner set forth in applicant's claim 5, since this is a conventional measure use to help reducing aberrations and it is known in the art that aspheric lenses have lower on-axis aberrations and could be used Therefore, it would have been obvious before the effective filing date of the claimed invention to a person having ordinary skill in the art to modify Sauter when the modified by Fujita as desired appropriate such as in the manner set forth in applicant's claim 5, since this is a conventional measure use to help reducing aberrations and it is known in the art that aspheric lenses have lower on-axis aberrations and could be used, since it has been held that the provision of adjustability, where needed, involves only routine skill in the art, In re Stevens, 101 USPQ 284 (CC1954). As to claim 6, Sauter when the modified by Fujita, Sauter and Fujita also teaches of microscope objective lens system structure that is use in a method/system that is implementing limitations such as, wherein the objective lens is an infinite conjugate lens is implicitly in and/or render obvious as can be seen in depicted drawing (figs.1-3) and (fig. 1)), As to claim 9, Sauter when the modified by Fujita, Sauter also teaches of microscope objective lens system structure that is use in a device/system that is implementing limitations such as, wherein the particles are labeled with a fluorescent dye [pars. 0001-3]. As to claim 10, Sauter when the modified by Fujita, Sauter also teaches of microscope objective lens system structure that is use in a device/system that is implementing limitations such as, wherein the detection unit detects light having a wavelength of 360 nm to 920 nm [par. 0018]. As to claims 11-12, Sauter when the modified by Fujita, Sauter also teaches of microscope objective lens system structure that is use in a device/system that is implementing limitations such as, wherein the detection unit includes a plurality of detectors/sensing devices that detect light in different wavelength bands [pars. 0001, 0003-4 and 0008] (claim 11); wherein the detection optical system includes an imaging lens [pars. 0003-4, 0006 and 0011] (claim 12). As to claims 13-17, Sauter when the modified by Fujita, Sauter teaches of detection optical system is cytometry lens system 200 comprises several optical elements included in the lens system (figs. 1-3) [pars. 0008, 0020, 0025], wherein the detection optical system includes an imaging lens [pars. 0003-4, 0006 and 0011], as applied to claim 7. Sauter when the modified by Fujita fail to teach the constructional changes in the device of claim 7, as that claimed by Applicants claims 13-17, such as, wherein the detection optical system includes a notch filter (claim 13); wherein the detection optical system includes a dichroic mirror, a prism, or a diffraction grating (claim 14); wherein the detection optical system includes a relay lens (claim 15); further comprising a sorting unit that sorts the particles based on a detection result of the detection unit (claim 16); and further comprising an information processing unit that processes detection data from the detection unit (claim 17). However, even though, Sauter when the modified by Fujita fail to teach the slight constructional changes in the device of claim 7, as that claimed by Applicants claims 13-17, the constructional changes are considered obvious design normal and standard implementation features in sample analyzers, in order to accurately characterize and analyze sample particles and/or in order to enhance accurate, sensitive, and specific analysis of microscopic elements. It would have been obvious before the effective filing date of the claimed invention to a person having ordinary skill in the art to modify Sauter when the modified by Fujita as desired appropriate such as in the manner set forth in applicant's claims 13-17, since this is a normal and standard implementation features in sample analyzers, use in order to accurately characterize and analyze sample particles and/or in order to enhance accurate, sensitive, and specific analysis of microscopic elements. Therefore, it would have been obvious before the effective filing date of the claimed invention to a person having ordinary skill in the art to modify Sauter when the modified by Fujita as desired appropriate such as in the manner set forth in applicant's claims 13-15, since this is a normal and standard implementation features in sample analyzers, use in order to accurately characterize and analyze sample particles and/or in order to enhance accurate, sensitive, and specific analysis of microscopic elements, since it has been held that the provision of adjustability, where needed, involves only routine skill in the art, In re Stevens, 101 USPQ 284 (CC1954). For the purposes of clarity, Sauter system is based on flow cytometer(s), cytometry/cytometer is a system that perform quantitative measurement and analysis of cell characteristics, like size, count, morphology, and internal/surface proteins, often using light scattering and fluorescence to analyze individual cells in a fluid stream, with flow cytometry being a common, rapid technique for diagnostics (e.g., blood tests, cancer) and research (e.g., cell cycle, immunology). It is obvious that the system would implement an information processing unit that processes detection data from the detection unit in order to sort and perform analysis of cell characteristics. Additional Prior Art The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. The references listed in the attached form PTO-892 teach of other prior art objective lens used in a sample analyzer. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to Isiaka Akanbi whose telephone number is (571) 272-8658. The examiner can normally be reached on 8:00 a.m. - 4:30 p.m. If attempts to reach the examiner by telephone are unsuccessful, the examiner’s supervisor, Tarifur R. Chowdhury can be reached on (571) 272-2287. The fax phone number for the organization where this application or proceeding is assigned is 703-872-9306. 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). /ISIAKA O AKANBI/Primary Examiner, Art Unit 2877
Read full office action

Prosecution Timeline

Jan 10, 2024
Application Filed
Jan 08, 2026
Non-Final Rejection — §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
76%
Grant Probability
99%
With Interview (+23.4%)
2y 8m
Median Time to Grant
Low
PTA Risk
Based on 1071 resolved cases by this examiner. Grant probability derived from career allow rate.

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