Prosecution Insights
Last updated: August 18, 2026
Application No. 18/294,344

LIGHT ADJUSTMENT DEVICE AND VEHICLE

Final Rejection §103
Filed
Feb 01, 2024
Priority
Oct 08, 2022 — nonprovisional of PCTCN2022123846
Examiner
CHUNG, DAVID Y
Art Unit
2871
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
BOE Technology Group Co., Ltd.
OA Round
2 (Final)
70%
Grant Probability
Favorable
3-4
OA Rounds
4m
Est. Remaining
78%
With Interview

Examiner Intelligence

Grants 70% — above average
70%
Career Allowance Rate
498 granted / 713 resolved
+1.8% vs TC avg
Moderate +8% lift
Without
With
+8.1%
Interview Lift
resolved cases with interview
Typical timeline
2y 10m
Avg Prosecution
25 currently pending
Career history
740
Total Applications
across all art units

Statute-Specific Performance

§101
0.1%
-39.9% vs TC avg
§103
65.8%
+25.8% vs TC avg
§102
27.5%
-12.5% vs TC avg
§112
3.9%
-36.1% vs TC avg
Black line = Tech Center average estimate • Based on career data from 713 resolved cases

Office Action

§103
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 . Claim Rejections - 35 USC § 103 The following is a quotation of 35 U.S.C. 103 which forms the basis for all obviousness rejections set forth in this Office action: A patent for a claimed invention may not be obtained, notwithstanding that the claimed invention is not identically disclosed as set forth in section 102, if the differences between the claimed invention and the prior art are such that the claimed invention as a whole would have been obvious before the effective filing date of the claimed invention to a person having ordinary skill in the art to which the claimed invention pertains. Patentability shall not be negated by the manner in which the invention was made. Claim 22 is rejected under 35 U.S.C. 103 as being unpatentable over Park et al. (US 2020/0285107) in view of Varaprasad et al. US 2008/0268260). As to claim 22, Park discloses in figure 4: a first substrate 100b and a second substrate 100a that are arranged opposite to each other; a light adjustment module 300 located between the first substrate and the second substrate; and an ultraviolet light blocking layer disposed in the light adjustment module (paragraph [0179], “The ultraviolet blocking layer may be formed on one side or both sides of the polarizing layer, the liquid crystal layer, or the electrode layer”). Park does not disclose wherein a refractive index of the ultraviolet light blocking layer is greater than a refractive index of the first substrate. Varaprasad discloses in paragraph [0011], a conventional UV blocking coating comprising a mixture of oxides of cerium, titanium, and silicon and having a refractive index (n) of 1.55 to 1.85. It would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to modify Li by providing the UV blocking layer structure of Varaprasad because conventional structures were known to be cost-effective and reliable. A refractive index of 1.55 to 1.85 would be higher than that of the first substrate, which is a glass substrate having a refractive index of about 1.5. As to claim 23, Park in view of Varaprasad discloses all of the elements of the claimed invention discussed above regarding claim 22. Park further discloses in figure 4, wherein the light adjustment module 300 includes a first base material layer 305b, a first electrode layer 303b, a light adjustment layer 301, a second electrode layer 303a and a second base material layer 305a that are sequentially stacked; the first base material layer 305b is closer to the first substrate 100b than the second base material layer 305a; the ultraviolet light blocking layer is located between the first base material layer and the first electrode layer (paragraph [0179], “The ultraviolet blocking layer may be formed on one side or both sides of the polarizing layer, the liquid crystal layer, or the electrode layer”). Varaprasad further discloses in paragraph [0011], wherein a material of the ultraviolet light blocking layer includes cerium dioxide and titanium dioxide. Allowable Subject Matter Claims 1, 3-11, 13 and 15-21 are allowed. The following is a statement of reasons for the indication of allowable subject matter: none of the prior art taught or fairly suggested a light adjustment device comprising the combination required by claim 1, wherein the ultraviolet light blocking layer is disposed on a surface of the light adjustment module proximate to the first substrate; the light adjustment device further comprises: a first adhesive layer located between the ultraviolet light blocking layer and the first substrate; wherein a refractive index of the first adhesive layer is greater than the refractive index of the first substrate, and is less than the refractive index of the ultraviolet light blocking layer. Claims 3-5, 8-10, 13 and 15-21 are allowed by virtue of their dependency. The following is a statement of reasons for the indication of allowable subject matter: none of the prior art taught or fairly suggested a light adjustment device comprising the combination required by claim 6, wherein the ultraviolet light blocking layer is disposed on a surface of the first substrate proximate to the light adjustment module; the light adjustment device further comprises: a first adhesive layer located between the ultraviolet light blocking layer and the light adjustment module; wherein a refractive index of the first adhesive layer is greater than the refractive index of the ultraviolet light blocking layer; and the refractive index of the ultraviolet light blocking layer is in a range of 1.4 to 1.5. Claims 7 and 11 are allowed by virtue of their 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 David Chung whose telephone number is (571)272-2288. The examiner can normally be reached Monday - Friday, 8:30 am - 5:00 pm. 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, Michael Caley can be reached at (571)272-2286. 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. /DAVID Y CHUNG/Primary Examiner, Art Unit 2871
Read full office action

Prosecution Timeline

Feb 01, 2024
Application Filed
Feb 01, 2024
Response after Non-Final Action
Feb 19, 2026
Non-Final Rejection mailed — §103
May 19, 2026
Response Filed
Aug 03, 2026
Final Rejection mailed — §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12704756
LIQUID CRYSTAL PHASE SHIFTER, PHASE SHIFT CIRCUIT, AND ANTENNA
1y 9m to grant Granted Aug 11, 2026
Patent 12687749
LIQUID CRYSTAL DISPLAY DEVICE
1y 10m to grant Granted Jul 21, 2026
Patent 12687750
LIGHT-ADJUSTING GLASS, MANUFACTURING METHOD THEREOF AND VEHICLE
2y 1m to grant Granted Jul 21, 2026
Patent 12687754
DISPLAY APPARATUS
2y 1m to grant Granted Jul 21, 2026
Patent 12676421
INTELLIGENT REFLECTING SURFACE
2y 3m to grant Granted Jul 07, 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
70%
Grant Probability
78%
With Interview (+8.1%)
2y 10m (~4m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 713 resolved cases by this examiner. Grant probability derived from career allowance rate.

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