Prosecution Insights
Last updated: October 04, 2026
Application No. 19/121,532

COMBUSTIBLE PROPELLANT CHARGE SLEEVE

Final Rejection §103
Filed
Apr 16, 2025
Priority
Jun 12, 2023 — DE 10 2023 115 226.2 +1 more
Examiner
FELTON, AILEEN BAKER
Art Unit
1734
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Nitrochemie Aschau GmbH
OA Round
2 (Final)
52%
Grant Probability
Moderate
3-4
OA Rounds
2y 11m
Est. Remaining
68%
With Interview

Examiner Intelligence

Grants 52% of resolved cases
52%
Career Allowance Rate
233 granted / 449 resolved
-13.1% vs TC avg
Strong +16% interview lift
Without
With
+16.5%
Interview Lift
resolved cases with interview
Typical timeline
4y 5m
Avg Prosecution
51 currently pending
Career history
497
Total Applications
across all art units

Statute-Specific Performance

§101
1.0%
-39.0% vs TC avg
§103
64.8%
+24.8% vs TC avg
§102
15.8%
-24.2% vs TC avg
§112
17.0%
-23.0% vs TC avg
Black line = Tech Center average estimate • Based on career data from 449 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 is acknowledged. Because applicant did not distinctly and specifically point out the supposed errors in the restriction requirement, the election has been treated as an election without traverse (MPEP § 818.01(a)). Claims 11-15 are withdrawn from further consideration pursuant to 37 CFR 1.142(b) as being drawn to a nonelected invention, there being no allowable generic or linking claim. Election was made without traverse in the reply filed on 5/11/2026. 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. Claims 1-10 are rejected under 35 U.S.C. 103 as being unpatentable over Wanninger (20070277694) in view of Posson (6427599). Regarding claims 1-5 and 7-10, Wanninger discloses a propellant charge in casing that includes pulp, nitrocellulose (0021) and trioxides of tungsten or molybdenum (0006) from 2-15 % (0012) and size 1-10 micron (0015). The concentration % will be the same since the same claimed amount is used. Posson teaches a pyrotechnic composition that includes addition of a cationic surfactant that includes polyamines from .01-3 %. The surfactant is used for the added benefit of reducing the agglomeration of individual particles of fuel/additive/oxidizer during processing (col. 19, lines 65-68 and col. 20, lines 1-30). It would have been obvious to one having ordinary skill in the art at the time the invention was made and/or filed to use the surfactant as taught by Posson with the composition of Wanninger since Posson teaches the use of such a surfactant with a pyrotechnic composition for the added benefit of reducing the agglomeration of individual particles of fuel/additive/oxidizer during processing. Regarding claim 6, the size of the charge casing (sleeve) and wall thickness is an obvious design choice to vary based on the type of gun being used. It is obvious to vary the parameters of the casing (sleeve) to achieve a desired result. It is well-settled that optimizing a result effective variable is well within the expected ability of a person of ordinary skill in the subject art. In re Boesch, 617 F.2d 272, 205 USPQ 215 (CCPA 1980), In re Aller, 220 F.2d 454, 105 USPQ 233 (CCPA 1955). Response to Arguments Applicant's arguments have been fully considered but they are not persuasive. In response to applicant’s argument that there is no teaching, suggestion, or motivation to combine the references, the examiner recognizes that obviousness may be established by combining or modifying the teachings of the prior art to produce the claimed invention where there is some teaching, suggestion, or motivation to do so found either in the references themselves or in the knowledge generally available to one of ordinary skill in the art. See In re Fine, 837 F.2d 1071, 5 USPQ2d 1596 (Fed. Cir. 1988), In re Jones, 958 F.2d 347, 21 USPQ2d 1941 (Fed. Cir. 1992), and KSR International Co. v. Teleflex, Inc., 550 U.S. 398, 82 USPQ2d 1385 (2007). In this case, it is obvious to use the surfactant as taught by Posson with the composition of Wanninger since Posson teaches the use of such a surfactant with a pyrotechnic composition for the added benefit of reducing the agglomeration of individual particles of fuel/additive/oxidizer during processing In response to applicant's arguments against the references individually, one cannot show nonobviousness by attacking references individually where the rejections are based on combinations of references. See In re Keller, 642 F.2d 413, 208 USPQ 871 (CCPA 1981); In re Merck & Co., 800 F.2d 1091, 231 USPQ 375 (Fed. Cir. 1986). In response to applicant's argument that the references fail to show certain features of the invention, it is noted that the features upon which applicant relies (i.e., forming of agglomerates) are not recited in the rejected claim(s). Although the claims are interpreted in light of the specification, limitations from the specification are not read into the claims. See In re Van Geuns, 988 F.2d 1181, 26 USPQ2d 1057 (Fed. Cir. 1993). Conclusion THIS ACTION IS MADE FINAL. Applicant is reminded of the extension of time policy as set forth in 37 CFR 1.136(a). A shortened statutory period for reply to this final action is set to expire THREE MONTHS from the mailing date of this action. In the event a first reply is filed within TWO MONTHS of the mailing date of this final action and the advisory action is not mailed until after the end of the THREE-MONTH shortened statutory period, then the shortened statutory period will expire on the date the advisory action is mailed, and any nonprovisional extension fee (37 CFR 1.17(a)) pursuant to 37 CFR 1.136(a) will be calculated from the mailing date of the advisory action. In no event, however, will the statutory period for reply expire later than SIX MONTHS from the mailing date of this final action. Any inquiry concerning this communication or earlier communications from the examiner should be directed to AILEEN BAKER FELTON whose telephone number is (571)272-6875. The examiner can normally be reached Monday 9-5:30, Thursday 11-3, Friday 9-5:30. 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, Jonathan Johnson can be reached at 571-272-1177. 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. /AILEEN B FELTON/Primary Examiner, Art Unit 1734
Read full office action

Prosecution Timeline

Apr 16, 2025
Application Filed
Jun 03, 2026
Non-Final Rejection mailed — §103
Aug 28, 2026
Response Filed
Sep 11, 2026
Final Rejection mailed — §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12735368
Thruster Propellants
3y 9m to grant Granted Sep 15, 2026
Patent 12723009
PROPELLANT CHARGE
1y 9m to grant Granted Sep 01, 2026
Patent 12715821
METAL HYDRIDE NANOPARTICLES
2y 5m to grant Granted Aug 25, 2026
Patent 12709586
SYSTEMS AND METHODS FOR CONTROLLABLE SYNTHESIS OF ENERGETIC NANOCOMPOSITES
1y 12m to grant Granted Aug 18, 2026
Patent 12692208
REDUCED VAPOR-TOXICITY HYDRAZINE COMPOSITION
5y 1m to grant Granted Jul 28, 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

3-4
Expected OA Rounds
52%
Grant Probability
68%
With Interview (+16.5%)
4y 5m (~2y 11m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 449 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