Prosecution Insights
Last updated: April 19, 2026
Application No. 18/353,540

FILTER HOUSING FOR BRAKE DUST PARTICLE FILTER FOR BRAKE DISC ARRANGEMENT

Non-Final OA §102
Filed
Jul 17, 2023
Examiner
TORRES WILLIAMS, MELANIE
Art Unit
3616
Tech Center
3600 — Transportation & Electronic Commerce
Assignee
MANN+HUMMEL GMBH
OA Round
1 (Non-Final)
85%
Grant Probability
Favorable
1-2
OA Rounds
2y 8m
To Grant
97%
With Interview

Examiner Intelligence

Grants 85% — above average
85%
Career Allow Rate
628 granted / 742 resolved
+32.6% vs TC avg
Moderate +12% lift
Without
With
+12.3%
Interview Lift
resolved cases with interview
Typical timeline
2y 8m
Avg Prosecution
44 currently pending
Career history
786
Total Applications
across all art units

Statute-Specific Performance

§101
0.1%
-39.9% vs TC avg
§103
37.5%
-2.5% vs TC avg
§102
46.1%
+6.1% vs TC avg
§112
15.1%
-24.9% vs TC avg
Black line = Tech Center average estimate • Based on career data from 742 resolved cases

Office Action

§102
DETAILED ACTION 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 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, 4-8 and 12-19 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Gelb (US 2018/0031059 A1). Re claim 1, Gelb discloses a circular segment-shaped filter housing of a brake dust particle filter for a brake disc arrangement, the filter housing comprising: a first housing side wall (28) and a second housing side wall (54) spaced apart relative to each other and delimiting at least partially in sections a receiving space configured to receive a brake disc (17) of the brake disc arrangement and lying between the first and the second housing side walls, wherein the first housing side wall (28) is comprised of a housing base wall and a support bridge (31) adjoining the housing base wall in a circumferential direction of the filter housing, wherein the receiving space extends axially between the housing base wall of the first housing side wall and the second housing side wall, wherein the second housing side wall (54) extends across a second housing side wall angle segment corresponding only to a housing base wall angle segment of the housing base wall of the first housing side wall, wherein the support bridge (31) comprises a circumferential end region facing away from the housing base wall, wherein the support bridge comprises at least one fastening point arranged in the circumferential end region and configured to connect the support bridge to a brake caliper of the brake disc arrangement, and wherein the first housing side wall (28), comprised of the housing base wall and the support bridge, extends across a first housing side wall angle segment of at least 180°. (Fig. 1-5) Re claim 4, Gelb discloses wherein the first and the second housing side walls (28, 54) each comprise a radial or tangential end face on a side facing the support bridge (31), and wherein the support bridge adjoins the radial or tangential end face of the first housing side wall. Re claim 5, Gelb discloses wherein the radial or tangential end face of the first housing side wall (28) and the radial or tangential end face of the second housing side wall (54) are connected to each other by an end wall. (Fig. 1) Re claim 6, Gelb discloses wherein the housing base wall of the first housing side wall and the second housing side wall (28, 54) each comprise a radial or tangential end face on a side facing the support bridge, wherein the support bridge (31) adjoins the radial or tangential end face of the housing base wall of the first housing side wall. (Fig. 2) Re claim 7, Gelb discloses wherein the radial or tangential end face of the housing base wall of the first housing side wall (28) and the radial or tangential end face of the second housing side wall (54) are connected to each other by an end wall. (Fig. 1) Re claim 8, Gelb discloses wherein the support bridge (31) comprises a radial exterior side, wherein the radial exterior side of the support bridge is radially recessed, at least in sections, relative to an outer radius of the housing base wall (28). Re claim 12, Gelb discloses wherein the housing base wall (28) and the second housing side wall (54) are embodied approximately or completely mirror-symmetrically relative to each other. Re claim 13, Gelb discloses wherein the housing base wall angle segment of the housing base wall (28) is larger than a support bridge angle segment of the support bridge (31). (Fig. 2) Re claim 14, Gelb discloses wherein the support bridge angle segment (31) extends across at least 20°. Re claim 15, Gelb discloses wherein the support bridge angle segment (31) extends across at least 40°. Re claim 16, Gelb discloses wherein the housing base wall (28) and the support bridge (31) of the first housing side wall are separate components, and wherein the separate components are connected to each other. (Fig. 2) Re claim 17, Gelb discloses wherein a part of the support bridge (31) is arranged so as to overlap the housing base wall in the circumferential direction. (Fig. 2) Re claim 18, Gelb discloses a brake dust particle filter comprising: the circular segment-shaped filter housing according to claim 1; and a filter material (70) arranged in the filter housing. Re claim 19, Gelb discloses system comprising: the brake dust particle filter comprising the circular segment-shaped filter housing according to claim 1 and a filter material (70) arranged in the filter housing; and the brake disc arrangement comprising the brake caliper (37), wherein the support bridge (31) is fastened at the brake caliper of the brake disc arrangement. Allowable Subject Matter Claims 2, 3, and 9-11 are 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 The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. Hummel et al., Butler, Bock et al. and DE ‘190 teach similar brake dust particle filters. Any inquiry concerning this communication or earlier communications from the examiner should be directed to MELANIE TORRES WILLIAMS whose telephone number is (571)272-7127. The examiner can normally be reached Tuesday - Friday 7:00AM-3:00PM. 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. /MELANIE TORRES WILLIAMS/ Primary Examiner Art Unit 3616 MTWJanuary 20, 2026
Read full office action

Prosecution Timeline

Jul 17, 2023
Application Filed
Jan 21, 2026
Non-Final Rejection — §102 (current)

Precedent Cases

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Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

1-2
Expected OA Rounds
85%
Grant Probability
97%
With Interview (+12.3%)
2y 8m
Median Time to Grant
Low
PTA Risk
Based on 742 resolved cases by this examiner. Grant probability derived from career allow rate.

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