Prosecution Insights
Last updated: August 06, 2026
Application No. 18/553,444

FILM USED FOR OUTER BAG FOR CHEMICAL BODY WARMER

Non-Final OA §103
Filed
Sep 29, 2023
Priority
Apr 02, 2021 — JP 2021-063528 +1 more
Examiner
FLANAGAN, BEVERLY MEINDL
Art Unit
3794
Tech Center
3700 — Mechanical Engineering & Manufacturing
Assignee
Kobayashi Pharmaceutical Co. Ltd.
OA Round
3 (Non-Final)
72%
Grant Probability
Favorable
3-4
OA Rounds
0m
Est. Remaining
93%
With Interview

Examiner Intelligence

Grants 72% — above average
72%
Career Allowance Rate
156 granted / 217 resolved
+1.9% vs TC avg
Strong +21% interview lift
Without
With
+21.2%
Interview Lift
resolved cases with interview
Typical timeline
2y 3m
Avg Prosecution
45 currently pending
Career history
265
Total Applications
across all art units

Statute-Specific Performance

§101
2.4%
-37.6% vs TC avg
§103
35.2%
-4.8% vs TC avg
§102
15.3%
-24.7% vs TC avg
§112
21.6%
-18.4% vs TC avg
Black line = Tech Center average estimate • Based on career data from 217 resolved cases

Office Action

§103
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 . Continued Examination Under 37 CFR 1.114 A request for continued examination under 37 CFR 1.114, including the fee set forth in 37 CFR 1.17(e), was filed in this application after final rejection. Since this application is eligible for continued examination under 37 CFR 1.114, and the fee set forth in 37 CFR 1.17(e) has been timely paid, the finality of the previous Office action has been withdrawn pursuant to 37 CFR 1.114. Applicant's submission filed on May 26, 2026 has been entered. Information Disclosure Statement The information disclosure statement filed April 15, 2026 has been entered and the references cited therein have been considered by the examiner Previously Set Forth Rejections The 35 USC 103 rejection of claims 1-8 as being unpatentable over JP4749050, as set forth in the final Office action mailed January 27, 2026, is hereby withdrawn. The following new grounds of rejection are set forth: 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 (i.e., changing from AIA to pre-AIA ) 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. 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. Claim(s) 1-6 and 8 are is/are rejected under 35 U.S.C. 103 as being unpatentable over Inoue et al. (U.S. Patent Application Publication No. 2017/0258632) in view of Eikeland et al., Oxygen Diffusion Through Polymer Membranes Under Non-Steady-State Conditions, WIT Transactions on Ecology and the Environment, Vol. 245, pp. 201-210 (2020) (hereinafter “Eikeland et al.). In regard to claim 1, Inoue et al. teach a multilayer film for a disposable body warmer outer bag (see para. 0027) comprised of a sealant layer 10 that has a thermal fusible resin substrate 11 (base material) and a vapor-deposited layer 12 made by vapor-depositing a metal or metal oxide on at least one surface of the substrate 11 (see Fig. 1 and para. 0030). A barrier layer 20 (heat-weldable resin layer) includes a polyvinyl chloride layer 22 and the multi-layer film is produced by pressure bonding (laminating) the layers together with the resin substrate 11 first, the vapor-deposited layer 12 second and the barrier layer 20 third (see para. 0056). Inoue et al. teach that the film can realize an oxygen permeability at 20 degrees C of 1.5 to 5.0 cc/m2 per day per atm (see para. 0054). However, Eikeland et al. teach that the temperature influences the permeation rate through a polymer membrane and in general, an increase in temperature gives an increase in flux through the membrane (see page 203). Thus, in the film/membrane of Inoue et al., an increase in temperature to 50 degrees C would result in a greater flux through the membrane, greater than 1.5 to 5.0 cc/m2 per day per atm. Accordingly, it would have been obvious to one of ordinary skill in the art at the effective filing date of the invention that the film/membrane of Inoue et al. is capable of an oxygen permeability at 50 degrees C of 11.4 to 62.8 cc/m2 per day per atm. Similarly, in regard to claim 2, it would have been obvious to one of ordinary skill in the art at the effective filing date of the invention that the film/membrane of Inoue et al. is capable of an oxygen permeability at 40 degrees C of 5.7 to 26.7 cc/m2 per day per atm. In regard to claim 3, see para. 0054 of Inoue et al. In regard to claim 4, see para. 0037 of Inoue et al. In regard to claims 5 and 6, see para. 0035 of Inoue et al. In regard to claim 8, see paras. 0057-060 of Inoue et al. Response to Arguments Applicant’s arguments with respect to claim(s) 1-6 and 8 have been considered but are moot because the new ground of rejection does not rely on any reference applied in the prior rejection of record for any teaching or matter specifically challenged in the argument. Any inquiry concerning this communication or earlier communications from the examiner should be directed to BEVERLY MEINDL FLANAGAN whose telephone number is (571)272-4766. The examiner can normally be reached Mon-Fri 7:30AM to 5:00PM. 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, Joanne Rodden can be reached at (303) 297-4276. 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. /BEVERLY M FLANAGAN/Primary Examiner, Art Unit 3794
Read full office action

Prosecution Timeline

Sep 29, 2023
Application Filed
Sep 17, 2025
Non-Final Rejection mailed — §103
Dec 16, 2025
Response Filed
Jan 27, 2026
Final Rejection mailed — §103
May 26, 2026
Request for Continued Examination
May 28, 2026
Response after Non-Final Action
Jul 02, 2026
Non-Final Rejection mailed — §103 (current)

Precedent Cases

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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
72%
Grant Probability
93%
With Interview (+21.2%)
2y 3m (~0m remaining)
Median Time to Grant
High
PTA Risk
Based on 217 resolved cases by this examiner. Grant probability derived from career allowance rate.

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