Prosecution Insights
Last updated: July 26, 2026
Application No. 18/331,908

MULTIPLE QUANTUM WELL BAND STRUCTURES FOR LIGHT EMITTING DEVICES

Non-Final OA §102
Filed
Jun 08, 2023
Priority
Dec 31, 2019 — CIP of 16/731,722
Examiner
MIYOSHI, JESSE Y
Art Unit
2898
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Microglass LLC
OA Round
1 (Non-Final)
57%
Grant Probability
Moderate
1-2
OA Rounds
5m
Est. Remaining
76%
With Interview

Examiner Intelligence

Grants 57% of resolved cases
57%
Career Allowance Rate
276 granted / 484 resolved
-11.0% vs TC avg
Strong +19% interview lift
Without
With
+18.7%
Interview Lift
resolved cases with interview
Typical timeline
3y 7m
Avg Prosecution
31 currently pending
Career history
543
Total Applications
across all art units

Statute-Specific Performance

§101
0.3%
-39.7% vs TC avg
§103
75.5%
+35.5% vs TC avg
§102
16.0%
-24.0% vs TC avg
§112
5.3%
-34.7% vs TC avg
Black line = Tech Center average estimate • Based on career data from 484 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 . Election/Restrictions Applicant's election with traverse of figs. 11A and 12A (claims 1-3 readable thereon, claims 4-11 withdrawn) in the reply filed on 3/3/2026 is acknowledged. The traversal is on the ground(s) that the other embodiments are not distinct species. This is not found persuasive because the band diagrams show they are distinct species. Applicant failed to state on the record that the species are obvious variants, therefore this argument is not persuasive. In their election, Applicant created new groupings which were not set forth by Examiner. Specifically, Examiner set in the restriction that there were 25 separate species shown in each of the figures 7A-16B. Examiner did not group together figs. 11A and 12A as one embodiment. Therefore, in a phone call with Nicholas Blanton, Applicant elected fig. 11A for consideration upon which claims 1-3 reads. The requirement is still deemed proper and is therefore made FINAL. 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) 1-3 is/are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Han et al. (US PGPub 2013/0020553; hereinafter “Han”). Re claim 1: Han teaches (e.g. figs. 1, 10, and 11) a light-emitting device (100) comprising: an n-type semiconductor layer (first conductivity type layer 102 can be provided with n-type impurities; e.g. paragraphs 39 and 40) disposed on a substrate (101); an active region (MQW active layer 103; e.g. paragraph 39) disposed on the n-type semiconductor layer (102), the active region (103) comprising: a plurality of concatenated quantum wells (quantum well layers 103a; e.g. paragraph 39), each concatenated quantum well (103a) having an energy band structure comprising: a strictly increasing bandgap (in regions 1 and 2 of the band structure of fig. 10 shows increasing bandgap) extending from a minimum value (minimum is at the border between regions 2 and 3; hereinafter “min”) to a maximum value (maximum is at the border between region 1 and 103b; hereinafter “max”) wherein the magnitude of the bandgap slope decreases monotonically (slope of bandgap magnitude decreases from region 2 to 103b) with increasing bandgap; no more than one bandgap discontinuity per concatenated quantum well (103a); and a p-type semiconductor layer (second conductivity type layer 104 can be provided with p-type impurities; e.g. paragraphs 39 and 40) disposed on the active region (103). Re claim 2: Han teaches the light-emitting device of claim 1, wherein each concatenated quantum well (103a) of said plurality of concatenated quantum wells comprises a period varying between about 5 nm and about 20 nm (a region within the quantum well is 1-20Å, therefore the total thickness of 103a is approximately 10nm; e.g. paragraph 49), and wherein at least one concatenated quantum well (103a) has a non-uniform period (103a has a non-uniform period insomuch that elected fig. 11A has a non-uniform period) with respect to at least one other period. Re claim 3: Han teaches the light-emitting device of claim 1, wherein each concatenated quantum well (103a) of said plurality of concatenated quantum wells (103a) comprises a bandgap range varying between about 0.1 eV and about 3.5 eV (103a is made of InGaN with In content being variable; e.g. paragraph 39; InGaN has a bandgap range from 2-3.5eV depending on indium content), and wherein at least one concatenated quantum well (103a) has a non-uniform bandgap range (range which is part of region 2 and region 1) with respect to at least one other bandgap range (the remaining region of region 1). Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to JESSE Y MIYOSHI whose telephone number is (571)270-1629. The examiner can normally be reached M-F, 8:30AM-5:00PM. 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, Jessica Manno can be reached at 571-272-2339. 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. /JESSE Y MIYOSHI/ Primary Examiner, Art Unit 2898
Read full office action

Prosecution Timeline

Jun 08, 2023
Application Filed
Apr 20, 2026
Non-Final Rejection mailed — §102 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12677647
DIFFUSION PREVENTION SPACER
4y 8m to grant Granted Jul 07, 2026
Patent 12672464
DISPLAY PANEL AND DISPLAY DEVICE
4y 9m to grant Granted Jun 30, 2026
Patent 12672467
DISPLAY DEVICE
4y 4m to grant Granted Jun 30, 2026
Patent 12666699
RC IGBT and Method of Producing an RC IGBT
4y 0m to grant Granted Jun 23, 2026
Patent 12648157
HYBRID HIGH BANDWIDTH MEMORIES
4y 9m to grant Granted Jun 02, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

Strategy Recommendation AI-generated — please review before filing

Get a prosecution strategy drawn from examiner precedents, rejection analysis, and claim mapping.
Typically takes 5-10 seconds — AI-generated, attorney review required before filing

Prosecution Projections

1-2
Expected OA Rounds
57%
Grant Probability
76%
With Interview (+18.7%)
3y 7m (~5m remaining)
Median Time to Grant
Low
PTA Risk
Based on 484 resolved cases by this examiner. Grant probability derived from career allowance rate.

Sign in with your work email

Enter your email to receive a magic link. No password needed.

Personal email addresses (Gmail, Yahoo, etc.) are not accepted.

Free tier: 3 strategy analyses per month