Prosecution Insights
Last updated: April 19, 2026
Application No. 18/051,805

LIP SEALS AND RELATED METHODS

Non-Final OA §102
Filed
Nov 01, 2022
Examiner
CUMAR, NATHAN
Art Unit
3675
Tech Center
3600 — Transportation & Electronic Commerce
Assignee
Bal Seal Engineering LLC
OA Round
3 (Non-Final)
78%
Grant Probability
Favorable
3-4
OA Rounds
2y 8m
To Grant
93%
With Interview

Examiner Intelligence

Grants 78% — above average
78%
Career Allow Rate
927 granted / 1183 resolved
+26.4% vs TC avg
Moderate +15% lift
Without
With
+15.0%
Interview Lift
resolved cases with interview
Typical timeline
2y 8m
Avg Prosecution
40 currently pending
Career history
1223
Total Applications
across all art units

Statute-Specific Performance

§103
41.3%
+1.3% vs TC avg
§102
27.5%
-12.5% vs TC avg
§112
27.0%
-13.0% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1183 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 . Continued Examination Under 37 CFR 1.114 A request for continued examination under 37 CFR 1.114, including the fee set forth in 37 CFR 1.17(e), was filed in this application after final rejection. Since this application is eligible for continued examination under 37 CFR 1.114, and the fee set forth in 37 CFR 1.17(e) has been timely paid, the finality of the previous Office action has been withdrawn pursuant to 37 CFR 1.114. Applicant's submission filed on 10/24/2025 has been entered. Response to Amendment Amendment to claims of 10/24/2024 is acknowledged. Specification objections in the Office action of 05/06/2025 are withdrawn. Claim objections in the Office action of 05/06/2025 are withdrawn. 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) 20 is/are rejected under 35 U.S.C. 102 (a) (1) as being anticipated by Balsells (U.S. Pub. App. 2018-0119857). For claim 20, Balsells discloses, in Figures 1-5, a seal assembly comprising: a seal element (120) having an inside flange (178), an outside flange (132), and a center channel section located between the inside flange and the outside flange (Figure 1); a deck (122, 188) extending from an outer flange extension (Radially outer most portion of deck 188, as shown below.) and an inner flange extension (As shown below.) and projecting into a space between the outside flange (178) and the inside flange (132) and together defining a spring cavity (Space where spring 124 is disposed defines the spring cavity.) with the inside flange, the outside flange (132) and deck (188) being mechanically engaged to one another (As shown below. Radial and axial movement of the deck is limited by the mechanical engagement. Figure 1); and a canted coil spring (124, para. [0093]) located in the spring cavity and biasing against the deck and the inside flange (Figure 1. Para. [0069, 0101]); and an excluder at an end of the center channel section with a flat or blunt tip (As shown below.) PNG media_image1.png 799 795 media_image1.png Greyscale For claim 22, Balsells discloses the seal assembly of claim 21, further comprising a cylinder (102) having a bore (104), and wherein the outer flange extension is pressed against an interior of the bore (Outer flange extension is pressed against an interior of the bore via 132. Figure 1.) Allowable Subject Matter Claims 1-19 allowed. Claim 21 is 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. Conclusion Prior art made of record and not relied upon is considered pertinent to applicant's disclosure and provides examples of similar inventions. There are no suggestions in the prior art of record for combining any of the references to arrive at as claimed. A few of the prior art cited but not applied includes Duong et al. (U.S. Pub. App. 2020-00208743) with seal element 102, inside flange 104, outside flange 106, and spring 120; Dilmaghanian et al. (U.S. Pub. App. 2018-0112778) with seal element 112, deck 114, and spring 116; and Balsells (U.S. Pub. App. 2016-0223086) with seal 104, deck 106, and spring 140. Any inquiry concerning this communication or earlier communications from the examiner should be directed to NATHAN CUMAR whose telephone number is (571)270-3112. The examiner can normally be reached Monday thru Friday, 8:00 am to 5:00 pm EST. Examiner interviews are available via telephone, 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 on 571-272-7376. 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. /NATHAN CUMAR/Primary Examiner, Art Unit 3675
Read full office action

Prosecution Timeline

Nov 01, 2022
Application Filed
Mar 07, 2024
Non-Final Rejection — §102
Sep 10, 2024
Response Filed
May 02, 2025
Final Rejection — §102
Oct 24, 2025
Request for Continued Examination
Nov 03, 2025
Response after Non-Final Action
Nov 04, 2025
Non-Final Rejection — §102 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12592110
OUTER ASSEMBLY OF ELECTRIC LOCK
2y 5m to grant Granted Mar 31, 2026
Patent 12590638
Circumferential Sealing Assembly with Duct-Fed Hydrodynamic Grooves
2y 5m to grant Granted Mar 31, 2026
Patent 12576792
CLAMP MECHANISM
2y 5m to grant Granted Mar 17, 2026
Patent 12576997
DRONE ARM FOLDING/LOCKING MECHANISM
2y 5m to grant Granted Mar 17, 2026
Patent 12577815
MOTOR VEHICLE AND USE OF A TRACTION BATTERY
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

3-4
Expected OA Rounds
78%
Grant Probability
93%
With Interview (+15.0%)
2y 8m
Median Time to Grant
High
PTA Risk
Based on 1183 resolved cases by this examiner. Grant probability derived from career allow rate.

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