Prosecution Insights
Last updated: July 17, 2026
Application No. 18/293,980

MODIFIED CONJUGATED DIENE-BASED POLYMER AND METHOD FOR PRODUCING SAME, POLYMER COMPOSITION, CROSS-LINKED PRODUCT, AND TIRE

Non-Final OA §102§103
Filed
Jan 31, 2024
Priority
Aug 04, 2021 — JP 2021-128526 +1 more
Examiner
OLADAPO, TAIWO
Art Unit
Tech Center
Assignee
Eneos Materials Corporation
OA Round
1 (Non-Final)
53%
Grant Probability
Moderate
1-2
OA Rounds
8m
Est. Remaining
65%
With Interview

Examiner Intelligence

Grants 53% of resolved cases
53%
Career Allowance Rate
612 granted / 1157 resolved
-7.1% vs TC avg
Moderate +12% lift
Without
With
+11.7%
Interview Lift
resolved cases with interview
Typical timeline
3y 1m
Avg Prosecution
58 currently pending
Career history
1242
Total Applications
across all art units

Statute-Specific Performance

§101
0.6%
-39.4% vs TC avg
§103
74.3%
+34.3% vs TC avg
§102
5.2%
-34.8% vs TC avg
§112
3.5%
-36.5% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1157 resolved cases

Office Action

§102 §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 § 102/103 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. 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. The factual inquiries for establishing a background for determining obviousness under 35 U.S.C. 103 are summarized as follows: 1. Determining the scope and contents of the prior art. 2. Ascertaining the differences between the prior art and the claims at issue. 3. Resolving the level of ordinary skill in the pertinent art. 4. Considering objective evidence present in the application indicating obviousness or nonobviousness. Claims 1 – 15 are rejected under 35 U.S.C. 102(a)(1) as anticipated by Tanaka et al. (WO 2019/045053A1) or, in the alternative, under 35 U.S.C. 103 as obvious over Tanaka et al. (WO 2019/045053 A1) In regards to claims 1 – 4, Tanaka teaches modified conjugated diene polymer, a rubber composition and a tire, and a method of making the polymer and the tire obtained using the rubber composition, wherein the rubber is prepared by polymerizing a conjugated diene with aromatic vinyl monomer in the presence of an alkali metal compound and forming a conjugated diene polymer, adding an alkali metal compound to the polymer and reacting the product with a modifying agent (specification). The aromatic vinyl can be styrene, alkyl styrene etc., and the alkali metal is capable of reacting with the modifying agent such as carbon dioxide, carbon disulfide or a combination such as to form the group COOM where M is alkali metal (specification). The process and product appear to be similar to those of the applicant as discussed in the disclosure as originally filed [see 0024 – 0034 of the instant specification]. Thus, Tanaka appears to teach the claimed polymer which would have the structure of formula (1) of the claims. In regards to claim 5, Tanaka teaches the molecular weight of the polymer is 100,000 to 1,000,000 (specification). In regards to claim 6, Tanaka teaches the polymer which can be prepared from ingredients comprising amides and thus provides an amino group as claimed (specification) In regards to claim 7, Tanaka teaches the method of producing the polymer comprising reacting the claimed ingredients such as including alkyl styrene which provides the limitation of formula 3) where R3 is an alkyl group and R1 and R2 are hydrogen. In regards to claims 8, 9, Tanaka teaches the method wherein the reaction process takes place in a solution that comprises a solvent such as alcohol or water (specification). In regards to claim 10, Tanaka teaches the method wherein the alkali metal compound can include hydrocarbyl lithium and lithium amide (i.e., lithium dialkyl amides) (specification). In regards to claim 11, Tanaka teaches the method having the claimed limitations as previously stated. In regards to claim 12, Tanaka teaches the polymer composition comprising the modified conjugated diene polymer and fillers such as carbon black and silica (specification). In regards to claim 13, Tanaka teaches the composition wherein the polymer can be prepared from carbon disulfide which provides sulfur. In regards to claim 14, Tanaka teaches the cross-linked product of the claim (specification). In regards to claim 15, Tanaka taches the tire wherein the tread and sidewall comprise the claimed polymer (specification). Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to TAIWO OLADAPO whose telephone number is (571)270-3723. The examiner can normally be reached 8-5pm. 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, Prem Singh can be reached at 571-272-6381. 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. /TAIWO OLADAPO/Primary Examiner, Art Unit 1771
Read full office action

Prosecution Timeline

Jan 31, 2024
Application Filed
Jun 17, 2026
Non-Final Rejection mailed — §102, §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12680039
BIOFUEL AND METHOD OF SYNTHESIS OF THE SAME
2y 1m to grant Granted Jul 14, 2026
Patent 12674111
Lubricants Having Improved Low Temperature, Oxidation, And Deposit Control Performance
3y 7m to grant Granted Jul 07, 2026
Patent 12674114
LUBRICANT COMPOSITIONS INCLUDING A POLYMERIZABLE-ACID GRAFT POLYMER AS A CORROSION INHIBITOR
1y 6m to grant Granted Jul 07, 2026
Patent 12649889
LUBRICATING OIL ADDITIVE COMPOSITION AND LUBRICATING OIL COMPOSITION
1y 5m to grant Granted Jun 09, 2026
Patent 12649891
GREASE COMPOSITION
1y 5m to grant Granted Jun 09, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

Strategy Recommendation AI-generated — please review before filing

Get a prosecution strategy drawn from examiner precedents, rejection analysis, and claim mapping.
Typically takes 5-10 seconds — AI-generated, attorney review required before filing

Prosecution Projections

1-2
Expected OA Rounds
53%
Grant Probability
65%
With Interview (+11.7%)
3y 1m (~8m remaining)
Median Time to Grant
Low
PTA Risk
Based on 1157 resolved cases by this examiner. Grant probability derived from career allowance 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