Prosecution Insights
Last updated: April 19, 2026
Application No. 18/935,722

SEALING ELEMENT WITH EXTRUSION PREVENTION FEATURE

Non-Final OA §103
Filed
Nov 04, 2024
Examiner
BYRD, EUGENE G
Art Unit
3675
Tech Center
3600 — Transportation & Electronic Commerce
Assignee
Freudenberg Flow Technologies LLC
OA Round
2 (Non-Final)
69%
Grant Probability
Favorable
2-3
OA Rounds
2y 12m
To Grant
79%
With Interview

Examiner Intelligence

Grants 69% — above average
69%
Career Allow Rate
580 granted / 836 resolved
+17.4% vs TC avg
Moderate +10% lift
Without
With
+9.8%
Interview Lift
resolved cases with interview
Typical timeline
2y 12m
Avg Prosecution
37 currently pending
Career history
873
Total Applications
across all art units

Statute-Specific Performance

§103
59.5%
+19.5% vs TC avg
§102
24.9%
-15.1% vs TC avg
§112
12.8%
-27.2% vs TC avg
Black line = Tech Center average estimate • Based on career data from 836 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 . 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. Claim(s) 1-10 is/are rejected under 35 U.S.C. 103 as being unpatentable over Pippert (US 4379558) in view of Balsells (US 5709371). Regarding claims 1, 5, 6 and 10, Pippert discloses a sealing element 40 Fig. 6 for sealing a gap between a first member 52 and a second member 50, comprising: an annular seal body 42 having an inner surface, an outer surface and a pair of side surfaces each connected between opposite ends of the inner surface and the outer surface; and a first garter spring 18 Fig. 2 embedded within at least one of an inner and an outer corner of the annular seal body and a second round garter spring 16 received within the first garter spring. However, Pippert fails to explicitly disclose where the first garter spring is rectangular in configuration. Balsells, shows this to be well known in the art. Balsells discloses the use of various shaped garter seals including a first rectangular shape garter spring 330 Fig. 65 and an embedded second round garter spring 332. Therefore, it would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to modify the garter spring of Pippert to a rectangular shape as taught by Balsells in order to reduce material damage and improved extrusion resistance. (Abstract of Balsells) Response to Arguments Applicant’s arguments with respect to claim(s) 1-10 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. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to EUGENE G BYRD whose telephone number is (571)270-1824. The examiner can normally be reached Monday-Friday 9am-5:30pm. 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, Kristina Fulton can be reached at 5712727376. 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. /EUGENE G BYRD/Primary Examiner, Art Unit 3675
Read full office action

Prosecution Timeline

Nov 04, 2024
Application Filed
Aug 09, 2025
Non-Final Rejection — §103
Oct 31, 2025
Response Filed
Jan 23, 2026
Non-Final Rejection — §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12595847
ENERGIZING ELEMENT AND METHODS OF MAKING AND USING THE SAME
2y 5m to grant Granted Apr 07, 2026
Patent 12595848
SOLID PLATE AND STUFFING BOX COMPRISING THE SOLID PLATE
2y 5m to grant Granted Apr 07, 2026
Patent 12584416
O-RING FOR GAS TURBINE ENGINE
2y 5m to grant Granted Mar 24, 2026
Patent 12578017
PISTON RING
2y 5m to grant Granted Mar 17, 2026
Patent 12577947
JUNK RING FOR RECIPROCATING PUMP
2y 5m to grant Granted Mar 17, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

2-3
Expected OA Rounds
69%
Grant Probability
79%
With Interview (+9.8%)
2y 12m
Median Time to Grant
Moderate
PTA Risk
Based on 836 resolved cases by this examiner. Grant probability derived from career allow rate.

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