Prosecution Insights
Last updated: October 24, 2026
Application No. 18/529,005

QUANTUM DOT COMPLEX, METHOD FOR PREPARING THE QUANTUM DOT COMPLEX, AND DISPLAY DEVICE COMPRISING THE QUANTUM DOT COMPLEX

Final Rejection §102
Filed
Dec 05, 2023
Priority
Jan 06, 2023 — RE 10-2023-0002242
Examiner
HENRY, CALEB E
Art Unit
2818
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Samsung Display Co., Ltd.
OA Round
2 (Final)
87%
Grant Probability
Favorable
3-4
OA Rounds
0m
Est. Remaining
93%
With Interview

Examiner Intelligence

Grants 87% — above average
87%
Career Allowance Rate
1101 granted / 1267 resolved
+18.9% vs TC avg
Moderate +6% lift
Without
With
+6.0%
Interview Lift
resolved cases with interview
Typical timeline
2y 3m
Avg Prosecution
28 currently pending
Career history
1315
Total Applications
across all art units

Statute-Specific Performance

§101
1.3%
-38.7% vs TC avg
§103
55.5%
+15.5% vs TC avg
§102
34.4%
-5.6% vs TC avg
§112
6.0%
-34.0% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1267 resolved cases

Office Action

§102
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 without traverse of claims 1-10, 19 and 20 in the reply filed on 3/23/2026 is acknowledged. Specification The title of the invention is not descriptive. A new title is required that is clearly indicative of the invention to which the claims are directed. 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)(2) the claimed invention was described in a patent issued under section 151, or in an application for patent published or deemed published under section 122(b), in which the patent or application, as the case may be, names another inventor and was effectively filed before the effective filing date of the claimed invention. Claims 1-8, 10, 19 and 20 are rejected under 35 U.S.C. 102(a)(2) as being anticipated by Qu (20190177615). Regarding claim 1, Qu teaches a quantum dot complex comprising: a quantum dot (par. 55-76 teaches a QD); a ligand which is bonded on a surface of the quantum dot and includes a hydrophilic group (par. 55-76 teaches a polymer material cross-linked to the outermost layer of the QD); and a protective layer which is bonded on the surface of the quantum dot and includes an aluminum oxide (par. 55-76 teaches the outermost layer of the QD being Al2O3). Regarding claim 2, Qu teaches a quantum dot complex of claim 1, wherein the hydrophilic group is a polyethylene glycol group or a (meth)acrylate group (par. 55-76 and par. 195-203). Regarding claim 3, Qu teaches a quantum dot complex of claim 1, wherein the ligand comprises: a first head part bonded on the surface of the quantum dot; a first linking part linked to the first head part; and a first tail part linked to the first linking part, and at least one of the first linking part and the first tail part includes the hydrophilic group (par. 55-76 and 195-2003). Regarding claim 4, Qu teaches a quantum dot complex of claim 3, wherein the first head part is a thiol group, a dithioic acid group, a phosphine group, a catechol group, an amine group, or a carboxylic acid group (par. 195-203). Regarding claim 5, Qu teaches a quantum dot complex of claim 1, wherein the ligand is a monodentate ligand or a bidentate ligand (par. 195-203 teaches fatty acid ligands and fatty acids are widely known monodentate ligands). Regarding claim 6, Qu teaches a quantum dot complex of claim 1, wherein the ligand is represented by Formula 1-1 or Formula 1-2: ##STR00013## wherein in Formula 1-1 and Formula 1-2, A.sub.1 to A.sub.3 are each independently O, S, or NH, Y.sub.1 and Y.sub.2 are each independently a moiety represented by one of Formula 2-1 to Formula 2-3, and *---- is a position linked on the surface of the quantum dot; ##STR00014## wherein in Formula 2-1 to Formula 2-3, R.sub.1 and R.sub.2 are each independently a substituted or unsubstituted oxy group, a substituted or unsubstituted thiol group, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, or a substituted or unsubstituted alkenyl group having 2 to 20 carbon atoms, R.sub.3 is a hydrogen atom or a substituted or unsubstituted methyl group, n1 to n3 are each independently an integer from 1 to 20, and ##STR00015## is a position linked to Formula 1-1 or Formula 1-2 (par. 195-203). Regarding claim 7, Qu teaches a quantum dot complex of claim 1, wherein the quantum dot comprises a core, and a shell surrounding the core, and the ligand and the protective layer are each bonded on the surface of the shell (par. 55-76 and par. 195-203). Regarding claim 8, Qu teaches a quantum dot complex of claim 7, wherein the core comprises first semiconductor nanocrystals, the shell comprises second semiconductor nanocrystals that are different from the first semiconductor nanocrystals, and the first semiconductor nanocrystals and the second semiconductor nanocrystals are each independently a Group II-VI compound, a Group III-VI compound, a Group I-III-VI compound, a Group III-V compound, a Group III-II-V compound, a Group IV-VI compound, a Group IV element, a Group IV compound, or a combination thereof (par. 162-194). Regarding claim 10, Qu teaches a quantum dot complex of claim 1, wherein the protective layer surrounds the surface of the quantum dot (par. 55-76 and par. 195-203). Regarding claim 19, Qu teaches a display device comprising: a display panel (par. 360); and a light conversion layer which is disposed on the display panel and comprises a plurality of light control parts (par. 360 and 361), wherein at least one of the plurality of light control parts comprises a quantum dot complex, and the quantum dot complex comprises: a quantum dot (par. 55-76 teaches a QD); a ligand which is bonded on a surface of the quantum dot and includes a hydrophilic group (par. 55-76 teaches a polymer material cross-linked to the outermost layer of the QD); and a protective layer which is bonded on the surface of the quantum dot and includes an aluminum oxide (par. 55-76 teaches the outermost layer of the QD being Al2O3). Regarding claim 20, Qu teaches a display device of claim 19, wherein the display panel comprises a light emitting element that generates a first light, and the light conversion layer comprises: a first light control part that transmits the first light; a second light control part that converts the first light to second light; and a third light control part that converts the first light to third light (par. 60, 360). Allowable Subject Matter Claim 9 (please note dependencies) is 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 CALEB E HENRY whose telephone number is (571)270-5370. The examiner can normally be reached Mon-Fri. 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, Eva Montalvo can be reached at (571) 270-3829. 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. /CALEB E HENRY/Primary Examiner, Art Unit 2818
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Prosecution Timeline

Dec 05, 2023
Application Filed
May 14, 2026
Non-Final Rejection mailed — §102
Aug 12, 2026
Response Filed
Oct 19, 2026
Final Rejection mailed — §102 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12772496
3D UFET DEVICE FOR ADVANCED 3D INTEGRATION
3y 9m to grant Granted Oct 20, 2026
Patent 12772676
ORGANIC LIGHT-EMITTING ELEMENT
3y 5m to grant Granted Oct 20, 2026
Patent 12772471
METHOD FOR MANUFACTURING INSULATED GATE BIPOLAR TRANSISTOR
2y 8m to grant Granted Oct 20, 2026
Patent 12772659
DISPLAY APPARATUS AND METHOD OF MANUFACTURING THE SAME
3y 0m to grant Granted Oct 20, 2026
Patent 12765062
DISPLAY PANEL AND DISPLAY APPARATUS
3y 2m to grant Granted Oct 13, 2026
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
87%
Grant Probability
93%
With Interview (+6.0%)
2y 3m (~0m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 1267 resolved cases by this examiner. Grant probability derived from career allowance rate.

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