Prosecution Insights
Last updated: April 19, 2026
Application No. 18/372,913

XANTHENE DERIVATIVE COMPOUND HAVING HIGH REFRACTIVE INDEX AND (CO)POLYMER COMPRISING SAME

Non-Final OA §102
Filed
Sep 26, 2023
Examiner
SERGENT, RABON A
Art Unit
1765
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Research & Business Foundation Sungkyunkwan University
OA Round
1 (Non-Final)
54%
Grant Probability
Moderate
1-2
OA Rounds
3y 5m
To Grant
79%
With Interview

Examiner Intelligence

Grants 54% of resolved cases
54%
Career Allow Rate
525 granted / 970 resolved
-10.9% vs TC avg
Strong +25% interview lift
Without
With
+24.8%
Interview Lift
resolved cases with interview
Typical timeline
3y 5m
Avg Prosecution
53 currently pending
Career history
1023
Total Applications
across all art units

Statute-Specific Performance

§101
0.2%
-39.8% vs TC avg
§103
52.8%
+12.8% vs TC avg
§102
8.0%
-32.0% vs TC avg
§112
19.5%
-20.5% vs TC avg
Black line = Tech Center average estimate • Based on career data from 970 resolved cases

Office Action

§102
Detailed Office Action Notice of Pre-AIA or AIA Status 1. The present application, filed on or after March 16, 2013, is being examined under the first inventor to file provisions of the AIA . Acknowledgement of Elections 2. Applicants’ election of Group I, claims 1-8, without traverse, in response to the Restriction Requirement, within the response of 13 February 2026 is acknowledged. Claims 9-12 have been withdrawn from further consideration as being drawn to a non-elected invention. 3. Applicants’ election of Species (IV), without traverse, in response to Election of Species Requirement I, within the response of 13 February 2026 is acknowledged. Species (IV) has been examined on the merits and found allowable; in accordance with Office practice, the examiner has therefore further examined Species (I). Claims 3, 4, 7, and 8 are withdrawn from further consideration as being drawn to non-elected species. 4. It is noted that applicants have not addressed Election of Species Requirement II. The examiner assumes this action was taken in view of applicants’ election of claims 1-8, to which Election of Species Requirement II does not apply. Prior Art Rejection 5. 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. 6. Claims 1 and 5 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by CN 114957654 A. CN 114957654 A discloses within the reaction scheme on page 8 of the reference a compound that corresponds to applicants’ claimed [Chemical Formula 1] having the chemical structures of [Chemical Formula 1-3]. Allowable Subject Matter 7. With regard to elected species (IV), claims 1 and 5 are allowable. With respect to Elected Species (IV) and Species (I), claims 2 and 6 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 and including only limitations with respect to the examined species. 8. CN 114957654 A fails to disclose compounds corresponding to Species (IV) and fails to disclose compounds corresponding to Species (I) having the claimed hydroxyl substituent ring location. Conclusion 9. Any inquiry concerning this communication or earlier communications from the examiner should be directed to Rabon A Sergent whose telephone number is (571)272-1079. The examiner can normally be reached on Monday through Friday from 9:00 AM until 5:00 PM, ET. If attempts to reach the examiner by telephone are unsuccessful, the examiner’s supervisor, Heidi Riviere Kelley, can be reached at telephone number 571-270-1831. The fax phone number for the organization where this application or proceeding is assigned is 571-273-8300. Information regarding the status of an application may be obtained from Patent Center. Status information for published applications may be obtained from Patent Center. Status information for unpublished applications is available through Patent Center to authorized users only. Should you have questions about access to the USPTO patent electronic filing system, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). Examiner interviews are available via a variety of formats. See MPEP § 713.01. To schedule an interview, applicant is encouraged to use the USPTO Automated Interview Request (AIR) Form at https://www.uspto.gov/InterviewPractice. /RABON A SERGENT/Primary Examiner, Art Unit 1765
Read full office action

Prosecution Timeline

Sep 26, 2023
Application Filed
Apr 03, 2026
Non-Final Rejection — §102 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12589153
POLYURETHANE EXCIPIENT
2y 5m to grant Granted Mar 31, 2026
Patent 12583964
POLYTHIOL COMPOSITION, POLYMERIZABLE COMPOSITION, RESIN, MOLDED ARTICLE, OPTICAL MATERIAL, AND LENS
2y 5m to grant Granted Mar 24, 2026
Patent 12570785
THERMOPLASTIC POLYURETHANE RESIN ELASTOMERS
2y 5m to grant Granted Mar 10, 2026
Patent 12559586
COMPOSITIONS CONTAINING URETDIONE GROUPS CROSSLINKING AT LOW TEMPERATURES
2y 5m to grant Granted Feb 24, 2026
Patent 12545760
URETHANE RESIN COMPOSITION, FILM, AND SYNTHETIC LEATHER
2y 5m to grant Granted Feb 10, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

AI Strategy Recommendation

Get an AI-powered prosecution strategy using examiner precedents, rejection analysis, and claim mapping.
Powered by AI — typically takes 5-10 seconds

Prosecution Projections

1-2
Expected OA Rounds
54%
Grant Probability
79%
With Interview (+24.8%)
3y 5m
Median Time to Grant
Low
PTA Risk
Based on 970 resolved cases by this examiner. Grant probability derived from career allow 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