Prosecution Insights
Last updated: August 15, 2026
Application No. 18/274,214

BLOCK POLYMER AND LITHIATED BLOCK POLYMER AND PREPARATION METHOD AND APPLICATION THEREOF

Non-Final OA §103
Filed
Jul 26, 2023
Priority
Jan 28, 2021 — CN 202110117682.4 +1 more
Examiner
LEE, DORIS L
Art Unit
1764
Tech Center
1700 — Chemical & Materials Engineering
Assignee
AESC Japan Ltd.
OA Round
1 (Non-Final)
59%
Grant Probability
Moderate
1-2
OA Rounds
0m
Est. Remaining
67%
With Interview

Examiner Intelligence

Grants 59% of resolved cases
59%
Career Allowance Rate
627 granted / 1070 resolved
-6.4% vs TC avg
Moderate +9% lift
Without
With
+8.6%
Interview Lift
resolved cases with interview
Typical timeline
3y 1m
Avg Prosecution
42 currently pending
Career history
1117
Total Applications
across all art units

Statute-Specific Performance

§101
0.7%
-39.3% vs TC avg
§103
57.7%
+17.7% vs TC avg
§102
15.2%
-24.8% vs TC avg
§112
13.7%
-26.3% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1070 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 . Election/Restrictions Applicant’s election without traverse of Group I (claims 1-4) in the reply filed on May 17, 2026 is acknowledged. Claims 5-18 are withdrawn from further consideration pursuant to 37 CFR 1.142(b) as being drawn to a nonelected invention, there being no allowable generic or linking claim. The requirement is deemed proper and is therefore made FINAL. 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(s) 1-4 is/are rejected under 35 U.S.C. 103 as being unpatentable over Klaerner et al (US 2002/0010267). Regarding claim 1-3, Klaerner teaches a block copolymer with the following structure: A-B-A-C which reads on the claimed structure ([0084]). Klaerner teaches that virtually any polymer architecture can be made from a wide variety of monomers including styrene, acrylic acid and n-butyl acrylate ([0083]). Klaerner fails to specifically exemplify the exact copolymer. However, Klaerner discloses each of the components of the block, and teaches that they are all suitable for use in the recited block copolymer structure. It is within the ordinary level of skill in the art to make any of the block copolymers suggested by a reference, including selecting materials from a list in a reference. Therefore, a person of ordinary skill would have been motivated to prepare any of the block copolymers suggested by Klaerner, including the claimed copolymer of styrene-n-butyl acrylate-styrene-acrylic acid. In view of this, it would have been obvious to a person of ordinary skill in the art at the time of the present invention to use the teachings of Klaerner to arrive at the presently claimed invention. It would have been nothing more than using known components in a typical manner to achieve predictable results. KSR v. Teleflex, 550 U.S. 418, 82 USPQ2d 1385 (2007). Regarding claim 4, Klaerner teaches that each of the blocks has a repeat unit of 10 or more ([0086]) which overlaps the recited range of the claimed copolymer. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to DORIS L LEE whose telephone number is (571)270-3872. The examiner can normally be reached M-F 8 am - 5 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, Arrie Lanee Reuther can be reached at 571-270-7026. 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. DORIS L. LEE Primary Examiner Art Unit 1764 /DORIS L LEE/Primary Examiner, Art Unit 1764
Read full office action

Prosecution Timeline

Jul 26, 2023
Application Filed
Jul 22, 2026
Non-Final Rejection mailed — §103 (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
59%
Grant Probability
67%
With Interview (+8.6%)
3y 1m (~0m remaining)
Median Time to Grant
Low
PTA Risk
Based on 1070 resolved cases by this examiner. Grant probability derived from career allowance rate.

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