Prosecution Insights
Last updated: April 19, 2026
Application No. 18/413,408

ZOOM LENS, OPTICAL APPARATUS AND METHOD FOR MANUFACTURING THE ZOOM LENS

Non-Final OA §103
Filed
Jan 16, 2024
Examiner
SIPES, JOHN CURTIS
Art Unit
2872
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Nikon Corporation
OA Round
1 (Non-Final)
80%
Grant Probability
Favorable
1-2
OA Rounds
3y 5m
To Grant
92%
With Interview

Examiner Intelligence

Grants 80% — above average
80%
Career Allow Rate
51 granted / 64 resolved
+11.7% vs TC avg
Moderate +12% lift
Without
With
+12.2%
Interview Lift
resolved cases with interview
Typical timeline
3y 5m
Avg Prosecution
40 currently pending
Career history
104
Total Applications
across all art units

Statute-Specific Performance

§101
0.2%
-39.8% vs TC avg
§103
62.0%
+22.0% vs TC avg
§102
23.6%
-16.4% vs TC avg
§112
14.1%
-25.9% vs TC avg
Black line = Tech Center average estimate • Based on career data from 64 resolved cases

Office Action

§103
DETAILED ACTION 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 . Priority Receipt is acknowledged of certified copies of papers required by 37 CFR 1.55. Information Disclosure Statement The information disclosure statement (IDS) submitted on 01/16/2024 is in compliance with the provisions of 37 CFR 1.97. Accordingly, the information disclosure statement is being considered by the Examiner. 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 42-47 are rejected under 35 U.S.C. § 103 as being unpatentable over Fujisaki (US 2010/0302650, of record) in view of Ikemori (US 4,206,973). Regarding claim 42, Fujisaki discloses a zoom lens comprising, in order from an object, a first lens group ([0034] discloses: L1, first lens unit) having positive refractive power (in at least abstract discloses: first lens unit, having positive refractive power), a second lens group ([0031] discloses: L2, second lens group) having negative refractive power (in at least abstract discloses: second lens group, having a negative refractive power), a third lens group (Figure 1 depicts: L3, third lens group), a fourth lens group (Figure 1 depicts: L4, fourth lens group), and a fifth lens group ([0029] discloses: L5, fifth lens unit) having positive refractive power ([0029] discloses: L5, fifth lens unit, having a positive refractive power), respective distances between all adjacent lens groups among the first to fifth lens groups being changed upon zooming (Figure 1 depicts: respective distances between all adjacent lens groups being changed upon zooming), the first lens group and the second lens group move upon zooming from a wide angle end state to a telephoto end state (Figure 1 depicts: Lines of movement from wide angle to telephoto; Examiner notes that the first and second lens groups are considered to both move when zooming), the first lens group being composed of three or more lenses ([0036] discloses: L1, first lens group is constituted by three lenses). Fujisaki fails to disclose the following conditional expression being satisfied: 36.00 < G1vd < 48.00 where G1vd denotes an Abbe number at the d-line of a lens in the first lens group disposed closest to the object side. However, optimizing the Abbe number is well within the bounds of normal experimentation. Ikemori teaches in multiple places, see Col. 5, lines 30-35, that the Abbe number of a lens system is are adjustable to achieve ideal values to adjust for aberrations. See MPEP 2144.05 II (A). “Where the general conditions of a claim are disclosed in the prior art, it is not inventive to dis-cover the optimum or workable ranges by routine experimentation. ”In re Aller, 220 F.2d 454, 456, 105 USPQ 233, 235 (CCPA 1955). Furthermore, “a particular parameter must first be recognized as a result-effective variable, i.e., a variable which achieves a recognized result, before the determination of the optimum or workable ranges of said variable might be characterized as routine experimentation. ”In re Antonie, 559 F.2d 618, 195 USPQ 6 (CCPA 1977). In the case at hand, Fujisaki along with Ikemori teaches the Abbe number as a variable which achieves a recognized result. Therefore, the prior art teaches adjusting the Abbe number and identifies said sizes/ratios as result-effective variables. Accordingly, it would have been obvious to one of ordinary skill in the art before the effective time of filing to keep the Abbe number between 36 and 48 since it is not inventive to dis-cover the optimum or workable ranges by routine experimentation. Regarding claim 43, the modified Fujisaki discloses the zoom lens according to claim 42, wherein the following conditional expression is satisfied: < D1/ft < 0.15 (using values from “Numerical Embodiment 1” table and “Each kinds of Data” table; D1 is calculated to be 10.3, ft is calculated to be 126, D1/ft is calculated to be 0.08, which falls within the claimed range) where D1 denotes a distance on an optical axis from an object side surface of the first lens group to an image side surface of the first lens group, and ft denotes a focal length of the zoom lens in the telephoto end state. Regarding claim 44, the modified Fujisaki discloses the zoom lens according to claim 42, wherein the first lens group is composed of a cemented lens at the most object side ([0036] discloses: L1, first lens unit, is constituted by a cemented lens). Regarding claim 45, the modified Fujisaki discloses the zoom lens according to claim 44, wherein the cemented lens is composed of a negative lens and a positive lens from the object side ([0036] discloses: L1, first lens unit, is constituted by a cemented lens which is made of negative lens and a positive lens and a negative lens). Regarding claim 46, Fujisaki discloses an optical apparatus equipped with the zoom lens according to claim 42 ([0002] teaches: zoom lens and image pickup apparatus; therefore considered to be an optical apparatus equipped with the zoom lens). Regarding claim 47, Fujisaki discloses a method for manufacturing a zoom lens, comprising: arranging, in a lens barrel and in order from an object, a first lens group ([0034] discloses: L1, first lens unit) having positive refractive power (in at least abstract discloses: first lens unit, having positive refractive power), a second lens group ([0031] discloses: L2, second lens group) having negative refractive power (in at least abstract discloses: second lens group, having a negative refractive power), a third lens group (Figure 1 depicts: L3, third lens group), a fourth lens group (Figure 1 depicts: L4, fourth lens group), and a fifth lens group ([0029] discloses: L5, fifth lens unit) having positive refractive power ([0029] discloses: L5, fifth lens unit, having a positive refractive power), the first to fifth lens groups being arranged such that: respective distances between all adjacent lens groups among the first to fifth lens groups are changed upon zooming (Figure 1 depicts: respective distances between all adjacent lens groups being changed upon zooming), the first lens group and the second lens group move upon zooming from a wide angle end state to a telephoto end state (Figure 1 depicts: Lines of movement from wide angle to telephoto; Examiner notes that the first and second lens groups are considered to both move when zooming), the first lens group is composed of three or more lenses ([0036] discloses: L1, first lens group is constituted by three lenses). Fujisaki fails to disclose the following conditional expression being satisfied: 36.00 < G1vd < 48.00 where G1vd denotes an Abbe number at the d-line of a lens in the first lens group disposed closest to the object side. However, optimizing the Abbe number is well within the bounds of normal experimentation. Ikemori teaches in multiple places, see Col. 5, lines 30-35, that the Abbe number of a lens system is are adjustable to achieve ideal values to adjust for aberrations. See MPEP 2144.05 II (A). “Where the general conditions of a claim are disclosed in the prior art, it is not inventive to dis-cover the optimum or workable ranges by routine experimentation. ”In re Aller, 220 F.2d 454, 456, 105 USPQ 233, 235 (CCPA 1955). Furthermore, “a particular parameter must first be recognized as a result-effective variable, i.e., a variable which achieves a recognized result, before the determination of the optimum or workable ranges of said variable might be characterized as routine experimentation. ”In re Antonie, 559 F.2d 618, 195 USPQ 6 (CCPA 1977). In the case at hand, Fujisaki along with Ikemori teaches the Abbe number as a variable which achieves a recognized result. Therefore, the prior art teaches adjusting the Abbe number and identifies said sizes/ratios as result-effective variables. Accordingly, it would have been obvious to one of ordinary skill in the art before the effective time of filing to keep the Abbe number between 36 and 48 since it is not inventive to dis-cover the optimum or workable ranges by routine experimentation. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to John Sipes whose telephone number is (703)756-1372. The examiner can normally be reached Monday - Thursday 6:00 - 11:00 and 1:00 - 6:00. Examiner interviews are available via telephone, in-person, and video conferencing using a USPTO supplied web-based collaboration tool. To schedule an interview, applicant is encouraged to use the USPTO Automated Interview Request (AIR) at http://www.uspto.gov/interviewpractice. If attempts to reach the examiner by telephone are unsuccessful, the examiner’s supervisor, Bumsuk Won can be reached at (571) 272-2713. The fax phone number for the organization where this application or proceeding is assigned is 571-273-8300. Information regarding the status of published or unpublished applications may be obtained from Patent Center. Unpublished application information in Patent Center is available to registered users. To file and manage patent submissions in Patent Center, visit: https://patentcenter.uspto.gov. Visit https://www.uspto.gov/patents/apply/patent-center for more information about Patent Center and https://www.uspto.gov/patents/docx for information about filing in DOCX format. For additional questions, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). If you would like assistance from a USPTO Customer Service Representative, call 800-786-9199 (IN USA OR CANADA) or 571-272-1000. /J.C.S./ Examiner, Art Unit 2872 /BUMSUK WON/ Supervisory Patent Examiner, Art Unit 2872
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Prosecution Timeline

Jan 16, 2024
Application Filed
Jan 12, 2026
Non-Final Rejection — §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12596213
LENS ASSEMBLY AND ELECTRONIC DEVICE INCLUDING THE SAME
2y 5m to grant Granted Apr 07, 2026
Patent 12588812
OPHTHALMIC APPARATUS, METHOD OF CONTROLLING SAME, AND PROGRAM
2y 5m to grant Granted Mar 31, 2026
Patent 12585098
MICROSCOPE OBJECTIVE LENS
2y 5m to grant Granted Mar 24, 2026
Patent 12571978
INTERFERENCE FILTER WITH MINIMAL ANGULAR AND THERMAL DEPENDENCE
2y 5m to grant Granted Mar 10, 2026
Patent 12566330
HEAD MOUNT DISPLAY DEVICE
2y 5m to grant Granted Mar 03, 2026
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
80%
Grant Probability
92%
With Interview (+12.2%)
3y 5m
Median Time to Grant
Low
PTA Risk
Based on 64 resolved cases by this examiner. Grant probability derived from career allow rate.

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