Prosecution Insights
Last updated: July 17, 2026
Application No. 18/660,977

MANUFACTURING METHOD OF PEROVSKITE LIGHT EMITTING DEVICE AND PEROVSKITE LIGHT EMITTING DEVICE MANUFACTURED THROUGH THE SAME

Non-Final OA §102
Filed
May 10, 2024
Priority
May 11, 2023 — RE 10-2023-0061208 +1 more
Examiner
CHOWDHURY, AFROZA Y
Art Unit
Tech Center
Assignee
Seoul National University R&DB Foundation
OA Round
1 (Non-Final)
72%
Grant Probability
Favorable
1-2
OA Rounds
7m
Est. Remaining
66%
With Interview

Examiner Intelligence

Grants 72% — above average
72%
Career Allowance Rate
601 granted / 829 resolved
+12.5% vs TC avg
Minimal -6% lift
Without
With
+-6.3%
Interview Lift
resolved cases with interview
Typical timeline
2y 9m
Avg Prosecution
18 currently pending
Career history
847
Total Applications
across all art units

Statute-Specific Performance

§101
0.2%
-39.8% vs TC avg
§103
81.8%
+41.8% vs TC avg
§102
12.6%
-27.4% vs TC avg
§112
1.6%
-38.4% vs TC avg
Black line = Tech Center average estimate • Based on career data from 829 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 . Specification Applicant is reminded of the proper content of an abstract of the disclosure. A patent abstract is a concise statement of the technical disclosure of the patent and should include that which is new in the art to which the invention pertains. The abstract should not refer to purported merits or speculative applications of the invention and should not compare the invention with the prior art. If the patent is of a basic nature, the entire technical disclosure may be new in the art, and the abstract should be directed to the entire disclosure. If the patent is in the nature of an improvement in an old apparatus, process, product, or composition, the abstract should include the technical disclosure of the improvement. The abstract should also mention by way of example any preferred modifications or alternatives. Where applicable, the abstract should include the following: (1) if a machine or apparatus, its organization and operation; (2) if an article, its method of making; (3) if a chemical compound, its identity and use; (4) if a mixture, its ingredients; (5) if a process, the steps. Extensive mechanical and design details of an apparatus should not be included in the abstract. The abstract should be in narrative form and generally limited to a single paragraph within the range of 50 to 150 words in length. See MPEP § 608.01(b) for guidelines for the preparation of patent abstracts. The disclosure is objected to because of the following informalities: “Rudelsden-Popper” should be “Ruddelsden-Popper” in several paragraphs of originally filed specification. The specification should be revised carefully. Appropriate correction is required. Claim Objections Claims 1-2, 6, and 8-10 are objected to because of the following informalities: “Rudelsden-Popper” should be “Ruddelsden-Popper” in several lines. Appropriate correction is required. Claim 8 is exfoliated objected to because of the following informalities: in line 4, “Rudelsden-Popper perovskite single crystal layer 3” is not clear. Claim Rejections - 35 USC § 102 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. 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. Claims 1, 3-4, 8 and 10 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Rand et al. (US 20220306936). As to claim 1, Rand discloses a method of manufacturing perovskite light emitting device (Fig. 1, [0057]: organic-inorganic perovskite nanocrystals is a light emitting diode (LED)), comprising preparing a first electrode (Fig. 1, [0057]: first electrode) including a first functional layer ([0058]: hole transport layer (HTL)); transferring a bulk single crystal layer of Ruddlesden-Popper perovskite (RPP) onto the first functional layer ([0058]: hole transport layer (HTL), [0066] – [0069]); exfoliating the transferred Rudelsden-Popper perovskite bulk single crystal layer to provide an exfoliated Rudelsden-Popper perovskite single crystal layer ([0066] – [0069], [0078]: Ruddlesden-Popper phases); and sequentially depositing a second functional layer ([0058]: electron transport layer (ETL)) and a second electrode (Fig. 1, [0057]: second electrode) on the exfoliated Rudelsden-Popper perovskite single crystal layer ([0068], [0078]: Ruddlesden-Popper phases), wherein one of the first functional layer or the second functional layer is an electron transport layer ([0058]: electron transport layer (ETL)) and the other is a hole transport layer ([0058]: hole transport layer (HTL)). As to claim 3, Rand teaches the method of claim 1, wherein the first functional layer is a hole transport layer, and the hole transport layer is hydrophilic conductive polymer thin film ([0058]: hole transport layer (HTL)). As to claim 4, Rand teaches the method of claim 3, wherein the hole transport layer comprises PEDOT:PSS, 3-hydroxytyramine hydrochloride (DA·HCl), poly[bis(4-butypheny)-bis(phenyl)benzidine (poly-TPD), or poly(9-vinylcarbazole) (PVK), or a combination thereof, as a hydrophilic conductive polymer; NiOx, MoO3, or Cu2O or a combination thereof as an inorganic material; or a combination thereof ([0058]: hole transport layer (HTL) comprises bis(4-butylphenyl)- bis(phenyl)-benzidine] (poly-TPD), poly(9-vinylcatbazole) (PVK), PEDOT:PSS; Note: since there is “or”, the Examiner can pick one element from the list to reject entire limitation). As to claim 8, Rand discloses a perovskite light emitting device (Fig. 1, [0057]: organic-inorganic perovskite nanocrystals is a light emitting diode (LED)), comprising a first electrode (Fig. 1, [0057]: first electrode); a first functional layer ([0058]: hole transport layer (HTL)) disposed on the first electrode (Fig. 1, [0057]: first electrode); an exfoliated Rudelsden-Popper perovskite single crystal layer 3 disposed on the first functional layer ([0068] – [0069], [0078]: Ruddlesden-Popper phases); a second functional layer ([0058]: electron transport layer (ETL)) disposed on the exfoliated Rudelsden-Popper perovskite single crystal layer ([0068] – [0069], [0078]: Ruddlesden-Popper phases); and a second electrode (Fig. 1, [0057]: second electrode) on the second functional layer ([0058]: electron transport layer (ETL)), wherein one of the first functional layer or the second functional layer is an electron transport layer ([0058]: electron transport layer (ETL)) and the other is a hole transport layer ([0058]: hole transport layer (HTL)). As to claim 10, Rand teaches the perovskite light emitting device of claim 8, wherein the exfoliated Rudelsden-Popper perovskite single crystal layer has a thickness of 20 nm to 30 nm ([0054]: organic-inorganic perovskite nanocrystal layer can generally have thickness of 20-100 nm). Allowable Subject Matter Claims 2, 5-7 and 9 are objected to as being dependent upon a rejected base claim, but would be allowable if rewritten in independent form including all of the limitations of the base claim and any intervening claims. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to AFROZA Y CHOWDHURY whose telephone number is (571)270-1543. The examiner can normally be reached M-F 9am-5pm. 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, Nitin Patel can be reached at (571)272-7677. 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. /AFROZA CHOWDHURY/Primary Examiner, Art Unit 2628
Read full office action

Prosecution Timeline

May 10, 2024
Application Filed
Jun 12, 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
72%
Grant Probability
66%
With Interview (-6.3%)
2y 9m (~7m remaining)
Median Time to Grant
Low
PTA Risk
Based on 829 resolved cases by this examiner. Grant probability derived from career allowance rate.

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