Prosecution Insights
Last updated: July 17, 2026
Application No. 18/363,384

Brake-fluid conduit for conducting a brake fluid

Non-Final OA §102§103
Filed
Aug 01, 2023
Priority
Oct 25, 2022 — DE 102022211306.3
Examiner
KING, BRADLEY T
Art Unit
3616
Tech Center
3600 — Transportation & Electronic Commerce
Assignee
HL Mando Corporation
OA Round
3 (Non-Final)
71%
Grant Probability
Favorable
3-4
OA Rounds
1m
Est. Remaining
94%
With Interview

Examiner Intelligence

Grants 71% — above average
71%
Career Allowance Rate
680 granted / 961 resolved
+18.8% vs TC avg
Strong +24% interview lift
Without
With
+23.5%
Interview Lift
resolved cases with interview
Typical timeline
3y 1m
Avg Prosecution
35 currently pending
Career history
1000
Total Applications
across all art units

Statute-Specific Performance

§101
0.4%
-39.6% vs TC avg
§103
63.7%
+23.7% vs TC avg
§102
14.3%
-25.7% vs TC avg
§112
18.6%
-21.4% vs TC avg
Black line = Tech Center average estimate • Based on career data from 961 resolved cases

Office Action

§102 §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 . Priority Receipt is acknowledged of certified copies of papers required by 37 CFR 1.55. 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. (a)(2) the claimed invention was described in a patent issued under section 151, or in an application for patent published or deemed published under section 122(b), in which the patent or application, as the case may be, names another inventor and was effectively filed before the effective filing date of the claimed invention. Claim(s) 1, 4-6, 8, 10, and 12 is/are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Garcia Blanco (US# 2010/0187814). Garcia Blanco discloses all the limitations of the instant claim including; a brake-fluid conduit 2 for conducting a brake fluid between a fluid pressure supply device and a wheel cylinder of a hydraulic disk brake system [0004], wherein the brake-fluid conduit comprises a tapered portion 9 having a cross-section that is largest at an inner end of the tapered portion facing the wheel cylinder and that gradually narrows towards an outer end of the tapered portion facing away from the wheel cylinder. Note annotated figures below (figures 1 and 2c, combined; wheel cylinder label indicates end connected to a wheel cylinder/brake caliper). PNG media_image1.png 616 912 media_image1.png Greyscale Regarding claim 4, a brake-fluid channel adjacent to the tapered portion is approximately cylindrically shaped. Note portion at #4, figure 2c. Regarding claim 5, a diameter of the cross section of the tapered portion at the inner end of the tapered portion facing the wheel cylinder lies in a range between 4 mm and 8 mm. [0057] discloses a diameter of 4.76. Regarding claim 6, a diameter of the cross section of the tapered portion at the outer end of the tapered portion facing away from the wheel cylinder lies in a range between 3 mm and 5 mm. [0063] discloses a diameter of 3.4mm. Regarding claim 8, a ratio between a diameter of the cross section of the tapered portion at the inner end of the tapered portion facing the wheel cylinder and a diameter of the cross section of the tapered portion at the outer end of the tapered portion facing away from the wheel cylinder lies in a range between 1.1 and 2.0. 4.76 and 3.4 result in a ratio of 1.4. Regarding claim 10, Garcia Blanco further disclose a caliper [0004]. Regarding claim 12, the caliper arrangement comprises a connection piece for providing a fluid connection between the caliper and a brake-fluid line, wherein at least the tapered portion of the brake-fluid conduit is comprised in the connection piece. PNG media_image2.png 616 912 media_image2.png Greyscale Claim(s) 1, 4, 10-11 is/are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Itsuaki et al (US# 8261889). Itsuaki et al disclose all the limitations of the instant claim including; a brake-fluid conduit 10/11 for conducting a brake fluid between a fluid pressure supply device and a wheel cylinder 5 of a hydraulic disk brake system, wherein the brake-fluid conduit comprises a tapered portion 10 having a cross-section that is largest at an inner end of the tapered portion facing the wheel cylinder 5 and that gradually narrows towards an outer end of the tapered portion facing away from the wheel cylinder. Note figure 1 shows passage 10 having a constant width and figure 2 shows the passage 10 having a tapering height narrowing towards an outer end facing away from the cylinder 5. Regarding claim 4, a brake-fluid channel 13 adjacent to the tapered portion is approximately cylindrically shaped. Col. 4, lines 51-53. Regarding claim 10, Itsuaki et al further disclose a caliper 1. Regarding claim 11, the brake-fluid conduit 10/11 is integrated in a housing (102) of the caliper. 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 7 and 9 are is/are rejected under 35 U.S.C. 103 as being unpatentable over Garcia Blanco (US# 2010/0187814). Garcia Blanco disclose all the limitations of the instant claims with exception to a length of the tapered portion along an axial direction of the brake-fluid channel lying in a range from 4 to 8 mm (claim 7) or a ratio between a length of the tapered portion 9 along an axial direction of the brake-fluid conduit and a diameter of the cross section of the tapered portion at the inner end of the tapered portion facing the wheel cylinder lying in a range between 1.5 to 2.5. It would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to determine the length of the tapered portion through routine design and/or experimentation to provide the optimal arrangement which avoids excessively sharp bends or installation forces while not requiring an excessive length. Also note MPEP 2144.05(II). Response to Arguments Applicant's arguments filed 2/04/2026 have been fully considered but they are not persuasive. Regarding Blanco ‘814, Applicant argues that “the built-in pipette (9) is connected to and faces simply the brake hose (3) at one end and the connection pipe (4) at the other end. The built-in pipette (9) does not face the wheel cylinder and does not have the largest cross-section at the inner end facing the wheel cylinder. Also, the cross-section of the built-in pipette (9) does not gradually narrow towards the outer end of the tapered portion facing away from the wheel cylinder.” It is noted that the claim limitations regarding facing the wheel cylinder are “a tapered portion having a cross-section that is largest at an inner end of the tapered portion facing the wheel cylinder and that gradually narrows towards an outer end of the tapered portion facing away from the wheel cylinder.” At the connection identified in the annotated figure above, the larger cross-section faces towards the wheel cylinder and the smaller cross-section faces away from the wheel cylinder. The claim language does not preclude intervening brake hose between the tapered portion and the wheel cylinder. Regarding the “gradually narrows” recitation, note the annotated figure below. PNG media_image3.png 204 540 media_image3.png Greyscale Regarding Itsuaki ‘889, Applicant argues “However, the cylinder connection oil passage 10 in Itsuaki is connected to and faces simply the communication passages 11 at one end and upper/lower passage communication bores 13 at the other end, respectively. The cylinder connection oil passage 10 does not face the wheel cylinder and does not have the largest cross-section at the inner end facing the wheel cylinder. Also, the cross-section of the cylinder connection oil passage 10 does not gradually narrow towards the outer end of the tapered portion facing away from the wheel cylinder.” Col. 4, lines 34-38 of the reference state “The cylinder connection oil passages 10 extend from the bottom portion of the cylinders 5 in the radially outer direction of the disc to a point where the passage communication bores 13 are formed”. Communication passages 11 extend between adjacent cylinders 5. Passage 10 of Itsuaki faces and connects to the wheel cylinder 5, not passage 11 as argued by Applicant. Regarding the “gradually narrows” recitation, note the annotated figure below. PNG media_image4.png 312 440 media_image4.png Greyscale 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 BRADLEY T KING whose telephone number is (571)272-7117. The examiner can normally be reached 10:30-5:00 PM. 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, Robert Siconolfi can be reached at 571 272-7124. 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. /BRADLEY T KING/Primary Examiner, Art Unit 3616 BTK
Read full office action

Prosecution Timeline

Aug 01, 2023
Application Filed
Nov 07, 2025
Non-Final Rejection mailed — §102, §103
Feb 04, 2026
Response Filed
Mar 30, 2026
Final Rejection mailed — §102, §103
May 21, 2026
Response after Non-Final Action
Jun 26, 2026
Request for Continued Examination
Jul 04, 2026
Response after Non-Final Action
Jul 15, 2026
Non-Final Rejection mailed — §102, §103 (current)

Precedent Cases

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4y 10m to grant Granted Apr 28, 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
71%
Grant Probability
94%
With Interview (+23.5%)
3y 1m (~1m remaining)
Median Time to Grant
High
PTA Risk
Based on 961 resolved cases by this examiner. Grant probability derived from career allowance rate.

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