Prosecution Insights
Last updated: April 19, 2026
Application No. 18/278,105

Rubber Composition Containing Bio-Elastomer and Method for Preparing the Same

Non-Final OA §103
Filed
Aug 21, 2023
Examiner
NELSON, MICHAEL B
Art Unit
1787
Tech Center
1700 — Chemical & Materials Engineering
Assignee
LG Chem, Ltd.
OA Round
1 (Non-Final)
21%
Grant Probability
At Risk
1-2
OA Rounds
4y 1m
To Grant
58%
With Interview

Examiner Intelligence

Grants only 21% of cases
21%
Career Allow Rate
114 granted / 537 resolved
-43.8% vs TC avg
Strong +37% interview lift
Without
With
+36.7%
Interview Lift
resolved cases with interview
Typical timeline
4y 1m
Avg Prosecution
85 currently pending
Career history
622
Total Applications
across all art units

Statute-Specific Performance

§103
57.4%
+17.4% vs TC avg
§102
3.7%
-36.3% vs TC avg
§112
32.6%
-7.4% vs TC avg
Black line = Tech Center average estimate • Based on career data from 537 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 . 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 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. Claims 1-15 are pending. Claim Rejections - 35 USC § 103 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 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. If this application currently names joint inventors: in considering patentability of the claims the examiner presumes that the subject matter of the various claims was commonly owned as of the effective filing date of the claimed invention(s) absent any evidence to the contrary. Applicant is advised of the obligation under 37 CFR 1.56 to point out the inventor and effective filing dates of each claim that was not commonly owned as of the effective filing date of the later invention in order for the examiner to consider the applicability of 35 U.S.C. 102(b)(2)(C) for any potential 35 U.S.C. 102(a)(2) prior art against the later 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 set forth in Graham v. John Deere Co., 383 U.S. 1, 148 USPQ 459 (1966), that are applied 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. When something is indicated as being “obvious” this should be taken as shorthand for “prima facie obvious to one having ordinary skill in the art to which the claimed invention pertains before the effective filing date of the invention”. When a range is indicated as overlapping a claimed range, unless otherwise noted, this should be taken as short hand to indicate that the claimed range is obvious in view of the overlapping range in the prior art as set forth in MPEP 2144.05, in the case where the claimed range “overlap or lie inside ranges disclosed by the prior art”, a prima facie case of obviousness exists, In re Wertheim, 541 F.2d 257, 191 USPQ 90 (CCPA 1976); In re Woodruff, 919 F.2d 1575, 16 USPQ2d 1934 (Fed. Cir. 1990). Claim(s) 1-15 is/are rejected under 35 U.S.C. 103 as being unpatentable over Bastioli (U.S. 2013/0289182) in view of Kim (KR 2015-0130779, see machine translation). Regarding claims 1-15, Bastioli discloses a rubber composition comprising 30-100% of a vinyl aromatic conjugated diene polymer (as in claim 5) formed by hydrocarbon solvent based polymerization with an initiator, as in claim 9, with a molecular weight overlapping claim 13 ([0025]-[0029]), mixed with 0-70% of a butadiene rubber ([0075]-[0077], overlapping claim 6), as in claim 9, as well as a filler as in claims 7-8 at an amount overlapping claim 14. Bastioli does not disclose that the butadiene rubber is copolymerized with vegetable oil as claimed. However, Kim is also directed to rubber compositions that include filler, as in Bastioli, and discloses that such butadiene rubber may be copolymerized (from an already formed and active, i.e., reactive, polymer, as in claim 10, [0026]-[0031]) with an overlapping amount ([0037], as in claims 11-12) of vegetable oils (including those of claim 3-4, [0039]) to produce a MW corresponding to the conjugated diene part that overlaps the range of claims 2 and 10 ([0040], the disclosed MW is of the polybutadiene modified with vegetable oil, but because the polybutadiene is formed before such modification, and given the disclosed amount of vegetable oil based repeating units included in the final copolymer, the MW prior to modification with the vegetable oil still overlaps the claimed range) in order to improve dispersibility of the filler in the composition ([0008]), such that it would have been obvious to have used such a vegetable oil modified butadiene rubber as the butadiene rubber in Bastioli in order to improve dispersibility of the filler as taught by Kim. Although the particular butadiene isomer in Kim is not disclosed as in claim 15, the butadiene isomer in claim 15 is prima facie obvious. See MPEP 2144.09 II. Compounds which are position isomers (compounds having the same radicals in physically different positions on the same nucleus) or homologs (compounds differing regularly by the successive addition of the same chemical group, e.g., by -CH2- groups) are generally of sufficiently close structural similarity that there is a presumed expectation that such compounds possess similar properties. In re Wilder, 563 F.2d 457, 195 USPQ 426 (CCPA 1977). See also In re May, 574 F.2d 1082, 197 USPQ 601 (CCPA 1978) (stereoisomers prima facie obvious). Conclusion References cited in any corresponding foreign applications have been considered but would be cumulative to the above. Any inquiry concerning this communication or earlier communications from the examiner should be directed to MICHAEL B NELSON whose direct telephone number is (571)272-9886 and whose direct fax number is (571)273-9886 and whose email address is Michael.Nelson@USPTO.GOV. The examiner can normally be reached on Mon-Sat, 7am - 7pm. 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, Callie Shosho can be reached on 571-272-1123. The fax phone number for the organization where this application or proceeding is assigned is 571-273-8300 (faxes sent to this number will take longer to reach the examiner than faxes sent to the direct fax number above). Information regarding the status of an application may be obtained from the Patent Application Information Retrieval (PAIR) system. Status information for published applications may be obtained from either Private PAIR or Public PAIR. Status information for unpublished applications is available through Private PAIR only. For more information about the PAIR system, see http://pair-direct.uspto.gov. Should you have questions on access to the Private PAIR system, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). If you would like assistance from a USPTO Customer Service Representative or access to the automated information system, call 800-786-9199 (IN USA OR CANADA) or 571-272-1000. /MICHAEL B NELSON/ Primary Examiner, Art Unit 1787
Read full office action

Prosecution Timeline

Aug 21, 2023
Application Filed
Feb 23, 2026
Non-Final Rejection — §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

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ANTIADHESIVE SUPERHYDROPHOBIC SURFACES
2y 5m to grant Granted Mar 17, 2026
Patent 12545803
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2y 5m to grant Granted Feb 10, 2026
Patent 12545804
BIOCIDAL POLYMER FOR LONG-TERM SURFACE PROTECTION
2y 5m to grant Granted Feb 10, 2026
Patent 12540216
TWO-COMPONENT MOISTURE CURABLE THERMAL INTERFACE MATERIAL FOR THERMAL MANAGEMENT SYSTEMS
2y 5m to grant Granted Feb 03, 2026
Patent 12534650
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2y 5m to grant Granted Jan 27, 2026
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
21%
Grant Probability
58%
With Interview (+36.7%)
4y 1m
Median Time to Grant
Low
PTA Risk
Based on 537 resolved cases by this examiner. Grant probability derived from career allow rate.

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