Prosecution Insights
Last updated: July 17, 2026
Application No. 18/556,850

ELECTROLUMINESCENT DEVICE AND DISPLAY APPARATUS

Final Rejection §112
Filed
Oct 23, 2023
Priority
Apr 26, 2021 — CN 202110454429.8 +1 more
Examiner
LUKE, DANIEL M
Art Unit
2896
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
BOE Technology Group Co., Ltd.
OA Round
2 (Final)
71%
Grant Probability
Favorable
3-4
OA Rounds
0m
Est. Remaining
90%
With Interview

Examiner Intelligence

Grants 71% — above average
71%
Career Allowance Rate
497 granted / 699 resolved
+3.1% vs TC avg
Strong +19% interview lift
Without
With
+18.8%
Interview Lift
resolved cases with interview
Typical timeline
2y 9m
Avg Prosecution
23 currently pending
Career history
722
Total Applications
across all art units

Statute-Specific Performance

§101
0.1%
-39.9% vs TC avg
§103
80.2%
+40.2% vs TC avg
§102
10.6%
-29.4% vs TC avg
§112
8.2%
-31.8% vs TC avg
Black line = Tech Center average estimate • Based on career data from 699 resolved cases

Office Action

§112
DETAILED ACTION This office action is in response to the amendment filed 4/14/2026. Currently, claims 1-2, 5-18 and 20 are pending. Claims 3-4 and 19 have been canceled. Specification The disclosure is objected to because of the following informalities: In para. [0039] of the amended specification, reference numeral “32” is used to designate the third hole blocking layer. However, elsewhere, “32” is used to designate the first hole blocking layer and “34” is used to designate the third hole blocking layer. Similarly, in para. [0039], “34” is used to designate the first hole blocking layer. However, elsewhere, “32” is used to designate the first hole blocking layer and “34” is used to designate the third hole blocking layer. Appropriate correction is required. Claim Objections Claim 1 is objected to because the limitation “wherein n is an integer greater than 1” (lines 5-6) is superfluous in light of the amendment. Claim 1 has been amended to recite “wherein n is greater than 2” (line 14). In the case that n is greater than 2, then of course n is greater than 1. The Examiner suggests amending the limitation in lines 5-6 to recite “wherein n is an integer greater than 2” and to delete the limitation “wherein n is greater than 2” in line 14. Appropriate correction is required. Claim Rejections - 35 USC § 112 The following is a quotation of 35 U.S.C. 112(b): (b) CONCLUSION.—The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the inventor or a joint inventor regards as the invention. The following is a quotation of 35 U.S.C. 112 (pre-AIA ), second paragraph: The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the applicant regards as his invention. Claims 1-2, 5-18 and 20 are rejected under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), second paragraph, as being indefinite for failing to particularly point out and distinctly claim the subject matter which the inventor or a joint inventor (or for applications subject to pre-AIA 35 U.S.C. 112, the applicant), regards as the invention. Claim 1 recites “except for the electron transport layer in the first light-emitting functional layer closest to the cathode” at the end of the claim. It is not clear to what this refers, particularly considering that the preceding limitation is “wherein the thicknesses of the electron transport layers in the remaining light-emitting functional layers of the n light-emitting functional layers except for the first light-emitting functional layer are the same” and there is another limitation that “a thickness of an electron transport layer in a first light-emitting functional layer closest to the cathode among n light-emitting functional layers is greater than each of thicknesses of electron transport layers in remaining light-emitting functional layers of the n light-emitting functional layers except for the first light-emitting functional layer”. With these relationships already claimed, it is not clear to what “except for the electron transport layer in the first light-emitting functional layer closest to the cathode” at the end of claim 1 refers. Claims 2, 5-18 and 20 recite the same limitation via dependency. Conclusion Applicant's amendment necessitated the new ground(s) of rejection presented in this Office action. Accordingly, THIS ACTION IS MADE FINAL. See MPEP § 706.07(a). Applicant is reminded of the extension of time policy as set forth in 37 CFR 1.136(a). A shortened statutory period for reply to this final action is set to expire THREE MONTHS from the mailing date of this action. In the event a first reply is filed within TWO MONTHS of the mailing date of this final action and the advisory action is not mailed until after the end of the THREE-MONTH shortened statutory period, then the shortened statutory period will expire on the date the advisory action is mailed, and any nonprovisional extension fee (37 CFR 1.17(a)) pursuant to 37 CFR 1.136(a) will be calculated from the mailing date of the advisory action. In no event, however, will the statutory period for reply expire later than SIX MONTHS from the mailing date of this final action. Any inquiry concerning this communication or earlier communications from the examiner should be directed to DANIEL M LUKE whose telephone number is (571)270-1569. The examiner can normally be reached Monday-Friday, 9am-5pm, 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, William Kraig can be reached at (571) 272-8660. 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. /DANIEL LUKE/Primary Examiner, Art Unit 2896
Read full office action

Prosecution Timeline

Oct 23, 2023
Application Filed
Jan 21, 2026
Non-Final Rejection mailed — §112
Apr 14, 2026
Response Filed
Jun 18, 2026
Final Rejection mailed — §112 (current)

Precedent Cases

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

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Prosecution Projections

3-4
Expected OA Rounds
71%
Grant Probability
90%
With Interview (+18.8%)
2y 9m (~0m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 699 resolved cases by this examiner. Grant probability derived from career allowance rate.

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