Prosecution Insights
Last updated: October 25, 2026
Application No. 18/423,655

CONTROLLING NOISE ON SAFETY VALVES

Final Rejection §102
Filed
Jan 26, 2024
Examiner
LUKS, JEREMY AUSTIN
Art Unit
2837
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Dresser LLC
OA Round
2 (Final)
74%
Grant Probability
Favorable
3-4
OA Rounds
0m
Est. Remaining
96%
With Interview

Examiner Intelligence

Grants 74% — above average
74%
Career Allowance Rate
872 granted / 1185 resolved
+5.6% vs TC avg
Strong +22% interview lift
Without
With
+21.9%
Interview Lift
resolved cases with interview
Typical timeline
2y 4m
Avg Prosecution
34 currently pending
Career history
1228
Total Applications
across all art units

Statute-Specific Performance

§101
0.4%
-39.6% vs TC avg
§103
54.1%
+14.1% vs TC avg
§102
27.0%
-13.0% vs TC avg
§112
15.4%
-24.6% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1185 resolved cases

Office Action

§102
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 claims 1-4 and 15 in the reply filed on 4/24/26 is acknowledged. Claim Rejections - 35 USC § 102 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 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. Claims 1-4 and 15 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Pugh (2024/0003292). With respect to Claim 1, Pugh teaches a silencer (Figures 1-3 and 5-7, #56, when the screen is formed as in Figures 5-7 – [0021], [0032]-[0033]), comprising: a body (84) having a first end (85), a second end (88), and a bore (defined by housing #84 interior #100) that extends therebetween, the bore (100) having a longitudinal axis (94), the body (84) comprising: a first portion (90) configured to attach (via duct #54) the first end (85) to a pressure relief valve (52) to receive a flow of fluid into the bore (100), and a second portion (86) comprising flow-disrupting features (defined by chevron shaped vanes #152 and recesses #150 having openings #98 therein) that extend into the flow, the flow-disrupting features (150/152/98) configured to change properties of the flow as between an inlet flow (74) at the first end (85) of the body (84) and an outlet flow (76/135) that exhausts from the bore (100) at the second end (88) of the body (84). With respect to Claim 2, Pugh teaches wherein the flow-disrupting features (150/152/98) extend from the second end (88) into the flow (note that the entire screen #86 having flow disrupting features #98 extends into the flow). With respect to Claim 3, Pugh teaches wherein the flow-disrupting features (150/152/98) comprise chevrons (152) disposed about the longitudinal axis (94). With respect to Claim 4, Pugh teaches, wherein the flow-disrupting features (150/152/98) comprise chevrons (defined vanes #152 located on the left-hand side of axis #138in Figure 6) disposed about the longitudinal axis (94), each chevron bending inwardly toward the longitudinal axis (94). With respect to Claim 15, Pugh teaches pressure relief valve (Figures 1-3 and 5-7, #52), comprising: a valve body (defined by body of #52) with an inlet and an outlet; a silencer (#56, when the screen is formed as in Figures 5-7 – [0021], [0032]-[0033]) coupled (via duct #54) with the outlet (outlet of #52), the silencer comprising, a body (84) with a bore (defined by housing #84 interior #100) that forms first opening (118), a second opening (defined by opening at end of bore at end #88 and covered by screen #86), and a longitudinal axis (94) extending therebetween; and a flow-disrupting device (defined by screen #86 having chevron shaped vanes #152 and recesses #150 having openings #98 therein) coupled to the body, wherein the flow-disrupting device (150/152/98) is configured to change properties of flow so as to reduce noise as between a first flow that exits the outlet of the valve body (body of #52) into the first opening (118) of the bore (100) and a second flow (76/135) that exits (via screen #86) the second opening (defined by opening at end of bore at end #88 and covered by screen #86) of the bore ([0021]). Claims 1-4 and 15 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Smagghe (4,007,908). With respect to Claim 1, Smagghe teaches a silencer (Figures 1a-c, #3/4/5/6/7), comprising: a body (3) having a first end (narrow upstream end of #3a adjacent #2), a second end (downstream end portion #3b), and a bore (interior space of #3) that extends therebetween, the bore having a longitudinal axis, the body (3) comprising: a first portion (upstream threaded portion) configured to attach the first end (narrow upstream end of #3a adjacent #2) to a pressure relief valve (1, see abstract - note “pressure reducing valve”) to receive a flow of fluid into the bore (interior space of #3), and a second portion (defined by portion of #3 accommodating structure #4a/4b/5/6/7) comprising flow-disrupting features (5/6/7) that extend into the flow, the flow-disrupting features (5/6/7) configured to change properties of the flow as between an inlet flow (flow at upstream end of #3) at the first end of the body and an outlet flow (slow exiting end #3b) that exhausts from the bore at the second end (3b) of the body (3) (Col 4, Lines 28-36). With respect to Claim 2, Smagghe teaches wherein the flow-disrupting features (5/6/7) extend from the second end (3b) into the flow. With respect to Claim 3, Smagghe teaches wherein the flow-disrupting features (5/6/7) comprise chevrons (5) disposed about the longitudinal axis. With respect to Claim 4, Smagghe teaches, wherein the flow-disrupting features (5/6/7) comprise chevrons (defined by ones of herringbone/chevrons #5 that bend inwardly toward the longitudinal axis) disposed about the longitudinal axis, each chevron bending inwardly toward the longitudinal axis. With respect to Claim 15, Smagghe teaches pressure relief valve (Figures 1a-1c, #1, see abstract - note “pressure reducing valve”), comprising: a valve body (defined by body of #1) with an inlet and an outlet; a silencer (#3/4/5/6/7) coupled with the outlet (outlet of #1), the silencer comprising, a body (3) with a bore (interior space of #3) that forms first opening (upstream end opening of #3), a second opening (downstream end opening of #3), and a longitudinal axis extending therebetween; and a flow-disrupting device (5/6/7) coupled to the body (3), wherein the flow-disrupting device (5/6/7) is configured to change properties of flow so as to reduce noise as between a first flow that exits the outlet of the valve body (body of #1) into the first opening (upstream end opening of #3) of the bore and a second flow that exits the second opening downstream end opening of #3) of the bore (Col 4, Lines 28-36). a silencer (Figures 1a-c, #3/4/5/6/7), comprising: a body (3) having a first end (narrow upstream end of #3a adjacent #2), a second end (downstream end portion #3b), and a bore (interior space of #3) that extends therebetween, the bore having a longitudinal axis, the body (3) comprising: a first portion (upstream threaded portion) configured to attach the first end (narrow upstream end of #3a adjacent #2) to a pressure relief valve (#1, see abstract - note “pressure reducing valve”) to receive a flow of fluid into the bore (interior space of #3), and a second portion (defined by portion of #3 accommodating structure #4a/4b/5/6/7) comprising flow-disrupting features (5/6/7) that extend into the flow, the flow-disrupting features (5/6/7) configured to change properties of the flow as between an inlet flow (flow at upstream end of #3) at the first end of the body and an outlet flow (slow exiting end #3b) that exhausts from the bore at the second end (3b) of the body (3). Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. Pertinent arts of record relating to Applicant’s disclosure are disclosed in the PTO-892. Any inquiry concerning this communication or earlier communications from the examiner should be directed to JEREMY AUSTIN LUKS whose telephone number is (571)272-2707. The examiner can normally be reached Monday-Friday (9:00-5:00). 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, Dedei Hammond can be reached at (571) 270-7938. 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. /JEREMY A LUKS/Primary Examiner, Art Unit 2837
Read full office action

Prosecution Timeline

Jan 26, 2024
Application Filed
May 08, 2026
Non-Final Rejection mailed — §102
Sep 08, 2026
Response Filed
Oct 22, 2026
Final Rejection mailed — §102 (current)

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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
74%
Grant Probability
96%
With Interview (+21.9%)
2y 4m (~0m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 1185 resolved cases by this examiner. Grant probability derived from career allowance rate.

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