Prosecution Insights
Last updated: October 01, 2026
Application No. 18/565,768

METHOD OF MOLDING COMBUSTIBLE HEAT SOURCE FOR SMOKING ARTICLE, COMBUSTIBLE HEAT SOURCE MANUFACTURED BY THE METHOD, AND SMOKING ARTICLE INCLUDING THE SAME

Non-Final OA §103§112
Filed
Nov 30, 2023
Priority
Dec 23, 2021 — RE 10-2021-0186224 +1 more
Examiner
OLADAPO, TAIWO
Art Unit
1749
Tech Center
1700 — Chemical & Materials Engineering
Assignee
KT&G Corporation
OA Round
1 (Non-Final)
53%
Grant Probability
Moderate
1-2
OA Rounds
3m
Est. Remaining
65%
With Interview

Examiner Intelligence

Grants 53% of resolved cases
53%
Career Allowance Rate
621 granted / 1173 resolved
-12.1% vs TC avg
Moderate +12% lift
Without
With
+11.8%
Interview Lift
resolved cases with interview
Typical timeline
3y 1m
Avg Prosecution
50 currently pending
Career history
1252
Total Applications
across all art units

Statute-Specific Performance

§101
2.1%
-37.9% vs TC avg
§103
55.2%
+15.2% vs TC avg
§102
14.3%
-25.7% vs TC avg
§112
16.3%
-23.7% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1173 resolved cases

Office Action

§103 §112
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 – 6) in the reply filed on 03/26/2026 is acknowledged. Claims 7 – 9 are withdrawn from further consideration pursuant to 37 CFR 1.142(b) as being drawn to a nonelected composition of Groups II and III, there being no allowable generic or linking claim. Election was made without traverse in the reply filed on 03/26/2026. Claim Rejections - 35 USC § 112 The following is a quotation of 35 U.S.C. 112(b): (b) CONCLUSION.—The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the inventor or a joint inventor regards as the invention. The following is a quotation of 35 U.S.C. 112 (pre-AIA ), second paragraph: The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the applicant regards as his invention. Claim 6 is rejected under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), second paragraph, as being indefinite for failing to particularly point out and distinctly claim the subject matter which the inventor or a joint inventor (or for applications subject to pre-AIA 35 U.S.C. 112, the applicant), regards as the invention. Claim 6 recites the limitation "the oil" in claim 1. There is insufficient antecedent basis for this limitation in the claim. The claim should clearly indicate if the oil is glycerin and/or propylene glycol. 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. 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 – 6 are rejected under 35 U.S.C. 103 as being unpatentable over Gladden et al. (RU 2 587 786 C2) In regards to claims 1 – 5, Gladden teaches a fuel heat source for use in smoking product containing carbon, a substance enhancing combustion (i.e., ignition accelerator) such as nitrate salts of metals, chlorates, peroxides, zirconium and combinations (abstract). Combustion aid is present at 25% or more, such as up to 65% of the heat source based on dry weight; carbon is present at about 20% or more, such as up to 80% based on dry weight; the heat source can be cylindrical and have a diameter of from 5 to 9 mm, and a length of from about 7 to 17 mm; the heat source can comprise a binder (binding materials) such as cellulose, vegetable oils, flour, guar gum etc., or their combinations, which in Example 1 comprises modified cellulose, flour, sugar and corn oil and is present at a calculated amount of 39.5% based on dry weight or 27.5% based on wet weight in the heat source (specification). According to Examples 1 to 4, the heat source comprises blending the carbon, binder, combustion enhancer with water. The heat source is mixed with an aerosol material including polyols such as glycerol (i.e., glycerin) (specification). The composition can be prepared through extrusion, casting, injection molding, stamping or pressing (specification). While a specific pressure for molding is not recited, it appears that the pressure and operating conditions of the mold will be results effective to provide the desired shape for the composition. Also, since similar composition are taught which can be aqueous or dry, it appears that similar dry and wet pressure ratios would be obtained by Gladden. Alternatively, in view of Suarez et al. (WO 2017/042389) teaches recites compression molding of tobacco heat sources similar to Gladden, the claims are obvious (title, abstract). Suarez teaches similar composition and which are compression molded at pressures of from about 0.02 to about 12 MPa (page 9). The combustible heat source has similar proportions of about 7.8 mm in diameter and about 9 mm in length (page 15). Thus, persons of ordinary skill in the art at the time the claims were filed would have found it obvious to have used the compression molding pressures of Suarez for the method of Gladden, as Suarez recites suitable pressures for preparing similar materials by compression molding. In regards to claim 6, Gladden teaches the composition wherein the heat source can comprise oil at 21g out of a total of 1324.5g on a dry bases and thus provide a calculated amount of about 1.6%. 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

Nov 30, 2023
Application Filed
Aug 20, 2026
Non-Final Rejection mailed — §103, §112 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12747348
THERMOPLASTIC RESIN COMPOSITION, METHOD OF PREPARING THE SAME, AND MOLDED ARTICLE MANUFACTURED USING THE SAME
2y 10m to grant Granted Sep 29, 2026
Patent 12723213
LUBRICATING OIL COMPOSITIONS WITH IMPROVED OXIDATIVE PERFORMANCE COMPRISING ALKYLATED DIPHENYLAMINE ANTIOXIDANT AND CARBOXYLATE DETERGENTS
4y 0m to grant Granted Sep 01, 2026
Patent 12716001
Aromatic Organic Solvent Composition and Paint Composition Comprising the Same
3y 2m to grant Granted Aug 25, 2026
Patent 12692456
LUBRICANT COMPOSITION
3y 10m to grant Granted Jul 28, 2026
Patent 12692162
DISPERSIONS CONTAINING GRAPHENIC CARBON NANOPARTICLES AND DISPERSANT RESINS
1y 10m to grant Granted Jul 28, 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
53%
Grant Probability
65%
With Interview (+11.8%)
3y 1m (~3m remaining)
Median Time to Grant
Low
PTA Risk
Based on 1173 resolved cases by this examiner. Grant probability derived from career allowance rate.

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