Prosecution Insights
Last updated: April 19, 2026
Application No. 18/944,909

FIREARM SYSTEM WITH GAS-PISTON SYSTEM

Final Rejection §102
Filed
Nov 12, 2024
Examiner
TILLMAN, JR, REGINALD S
Art Unit
3641
Tech Center
3600 — Transportation & Electronic Commerce
Assignee
VALT DEFENSE LLC
OA Round
2 (Final)
78%
Grant Probability
Favorable
3-4
OA Rounds
2y 0m
To Grant
89%
With Interview

Examiner Intelligence

Grants 78% — above average
78%
Career Allow Rate
1065 granted / 1367 resolved
+25.9% vs TC avg
Moderate +11% lift
Without
With
+11.0%
Interview Lift
resolved cases with interview
Fast prosecutor
2y 0m
Avg Prosecution
33 currently pending
Career history
1400
Total Applications
across all art units

Statute-Specific Performance

§101
0.4%
-39.6% vs TC avg
§103
32.1%
-7.9% vs TC avg
§102
39.1%
-0.9% vs TC avg
§112
20.9%
-19.1% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1367 resolved cases

Office Action

§102
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 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. Claim(s) 1 and 8-20 is/are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Hudson (US 5,272,956). Hudson (Fig 2) discloses a firearm system, comprising: an upper receiver, a barrel mounted to the upper receiver; a bolt carrier (18) arranged within the upper receiver for reciprocation; and a gas-piston system for transferring firing force to the bolt carrier for reloading, wherein the gas-piston system includes a piston shroud (48 and 42) mounted to the upper receiver and a piston (43) connected with the bolt carrier, wherein the piston is arranged within the piston shroud to receive force from firing gas from the barrel for reciprocating movement, the piston operable between an extended position and retracted position to drive reloading via the bolt carrier. Allowable Subject Matter Claims 2-7 objected to as being dependent upon a rejected base claim, but would be allowable if rewritten in independent form including all of the limitations of the base claim and any intervening claims. Response to Arguments Applicant's arguments filed 2-3-26 have been fully considered but they are not persuasive. Applicant argues that Hudson does not disclose at least claim 1 because the piston is not fixedly coupled with the bolt carrier because they a separated by a key bore; the examiner disagrees. The piston is clearly fixedly connected to the bolt carrier via the carrier key (15). 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 REGINALD S TILLMAN, JR whose telephone number is (571)270-7010. The examiner can normally be reached M-F 830-530. 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, Troy Chambers can be reached at 571-272-6874. 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. /REGINALD S TILLMAN, JR/Primary Examiner, Art Unit 3641
Read full office action

Prosecution Timeline

Nov 12, 2024
Application Filed
Jul 31, 2025
Non-Final Rejection — §102
Feb 03, 2026
Response Filed
Feb 17, 2026
Final Rejection — §102 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12601569
Systems for Projecting High Voltage Electrical Discharges in Air
2y 5m to grant Granted Apr 14, 2026
Patent 12595982
AMBIDEXTROUS BOLT RELEASE MECHANISM FOR FIREARM
2y 5m to grant Granted Apr 07, 2026
Patent 12594901
GAS GENERATOR
2y 5m to grant Granted Apr 07, 2026
Patent 12595985
CUSTOMER-SERVICEABLE FOREARM ASSEMBLY
2y 5m to grant Granted Apr 07, 2026
Patent 12590788
DEVICE AND METHOD THEREOF FOR OPERATING ELECTRONIC DETONATOR HAVING RESPONSE RELAY FUNCTION
2y 5m to grant Granted Mar 31, 2026
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
78%
Grant Probability
89%
With Interview (+11.0%)
2y 0m
Median Time to Grant
Moderate
PTA Risk
Based on 1367 resolved cases by this examiner. Grant probability derived from career allow rate.

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