Prosecution Insights
Last updated: July 17, 2026
Application No. 18/287,490

CORE-SHELL QUANTUM DOT AND METHOD FOR MANUFACTURING CORE-SHELL QUANTUM DOT

Non-Final OA §102
Filed
Oct 19, 2023
Priority
Apr 28, 2021 — JP 2021-075918 +1 more
Examiner
GODENSCHWAGER, PETER F
Art Unit
1767
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Shin-Etsu Chemical Co., Ltd.
OA Round
1 (Non-Final)
68%
Grant Probability
Favorable
1-2
OA Rounds
3m
Est. Remaining
86%
With Interview

Examiner Intelligence

Grants 68% — above average
68%
Career Allowance Rate
696 granted / 1025 resolved
+2.9% vs TC avg
Strong +18% interview lift
Without
With
+17.8%
Interview Lift
resolved cases with interview
Typical timeline
2y 12m
Avg Prosecution
34 currently pending
Career history
1048
Total Applications
across all art units

Statute-Specific Performance

§101
0.7%
-39.3% vs TC avg
§103
61.9%
+21.9% vs TC avg
§102
10.8%
-29.2% vs TC avg
§112
12.9%
-27.1% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1025 resolved cases

Office Action

§102
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 . 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 (i.e., changing from AIA to pre-AIA ) 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. Election/Restrictions Applicant's election with traverse of Group I, claims 6-9, in the reply filed on April 28, 2026 is acknowledged. The traversal is on the ground(s) that all the claims share the same technical feature. Upon reviewing the claims, the Examiner agrees that the claims all share the same technical feature. However, the Groups I-III lack unity of invention because even though the inventions of these groups require the technical feature of core-shell quantum dot comprising a semiconductor nanocrystal core including Zn and at least one of S, Se, or Te and a semiconductor nanocrystal shell including at least one shell layer comprising Mg, this technical feature is not a special technical feature as it does not make a contribution over the prior art in view of Yang et al. (US Pub. No. 2020/0362240). Yang et al. teaches a core-shell quantum dot comprising a core of ZnSeTe and a shell comprising Mg (Fig. 1). Applicant further argues that a complete search of the prior art has not been conducted. However, the MPEP does not require a full search of the prior art before a restriction requirement can be made. Claims 10-14 are withdrawn from further consideration pursuant to 37 CFR 1.142(b), as being drawn to a nonelected invention, there being no allowable generic or linking claim. Applicant timely traversed the restriction (election) requirement in the reply filed on April 28, 2026. Claim Rejections - 35 USC § 102 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. Claim(s) 6-9 is/are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Yang et al. (US Pub. No. 2020/0362240). Regarding Claim 6: Yang et al. teaches a quantum dot (nanocrystalline) comprising a core of ZnSeTe and a shell comprising Mg (Fig. 1). Regarding Claim 7: Yang et al. teaches the core is ZnSeTe wherein the ratio of Se:Te is 1:10-100-1, overlapping with sufficient specificity the claimed range of TexSe1-x ([0048]). Regarding Claims 8-9: Yang et al. teaches a shell layer of MgS (Fig. 1), reading on a shell of formula ZnβMg1-βS when β is 0. Correspondence Any inquiry concerning this communication or earlier communications from the examiner should be directed to PETER F GODENSCHWAGER whose telephone number is (571)270-3302. The examiner can normally be reached 8:30-5:00, M-F EST. 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, Mark Eashoo can be reached at 571-272-1197. 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. /PETER F GODENSCHWAGER/Primary Examiner, Art Unit 1767 June 9, 2026
Read full office action

Prosecution Timeline

Oct 19, 2023
Application Filed
Jun 11, 2026
Non-Final Rejection mailed — §102 (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
68%
Grant Probability
86%
With Interview (+17.8%)
2y 12m (~3m remaining)
Median Time to Grant
Low
PTA Risk
Based on 1025 resolved cases by this examiner. Grant probability derived from career allowance rate.

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