Prosecution Insights
Last updated: August 06, 2026
Application No. 18/626,588

FILTER ELEMENT FOR FILTERING AIR AND AIR FILTER

Non-Final OA §102
Filed
Apr 04, 2024
Priority
Oct 11, 2021 — DE 10 2021 126 246.1 +1 more
Examiner
PREGLER, SHARON
Art Unit
Tech Center
Assignee
Mann+hummel GmbH
OA Round
1 (Non-Final)
78%
Grant Probability
Favorable
1-2
OA Rounds
2m
Est. Remaining
99%
With Interview

Examiner Intelligence

Grants 78% — above average
78%
Career Allowance Rate
695 granted / 891 resolved
+18.0% vs TC avg
Strong +21% interview lift
Without
With
+21.1%
Interview Lift
resolved cases with interview
Typical timeline
2y 7m
Avg Prosecution
33 currently pending
Career history
919
Total Applications
across all art units

Statute-Specific Performance

§101
1.4%
-38.6% vs TC avg
§103
49.7%
+9.7% vs TC avg
§102
18.0%
-22.0% vs TC avg
§112
21.5%
-18.5% vs TC avg
Black line = Tech Center average estimate • Based on career data from 891 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 . Claim Objections Claim 1 objected to because of the following informalities: line 7 of the claim should read “…of the fold edges; and”. Appropriate correction is required. 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 1-20 are rejected under 35 U.S.C. 102(a) as being anticipated by Ebnet et al. US 12,521,665. Regarding claim 1, Ebnet teaches a filter element comprising: a) a filter body 17 comprising a folded filter medium with fold edges 4 (Figure 7, ; b) a first side strip 14A comprised of a fibrous material, wherein the first side strip comprises a seal section as the lateral band section of 14A (Figure 5, column 7 lines 35-40); wherein the seal section seals the filter body at a first end face extending transversely to the fold edges of the filter medium (Figures 5-7 and column 7 lines 35-40), and wherein the first side strip further comprises a first tab 14B projecting away from the seal section and extending in a direction of the fold edges (column 7 line 41); and c) a circumferential seal 17B engaging around the first tab. Regarding claims 2 and 3, the first tab 14B is arranged terminally at the seal section 17B (Figure 7) and arranges at both sides of the first tab (Figure 4). Regarding claims 4, 5, 6, and 7 the first tab can be single layer or multilayer (including two layers) (Figure 8, column 6 line 17) where the layers are glued (column 6 lines 59-61). Regarding claims 8 and 9, the first tab is glued to the seal section of the first side strip and the first tab and the seal section of the first side strip are configured together as one piece. (Figure 8) Regarding claim 10, the first side strip is comprised of a nonwoven material (column 3 line 24). Regarding claim 11, the first tab comprises through openings to allow the circumferential seal to pass (Figure 7 where the seal surrounds the tab). Regarding claim 12, the circumferential seal is comprised of a foamed material. Regarding claim 13, wherein the foamed material is a polyurethane foam (column 5 line 5). Regarding claims 14 and 15, the filter further comprises side strips on four rectangular sides thus, comprising a second side strip comprising a second tab, wherein the second side strip seals the filter body at a second end face extending transversely to the fold edges a third tab and a fourth tab, wherein the third tab and the fourth tab are arranged at the filter body between the first side strip and the second side strip, wherein the first tab, the second tab, the third tab, and the fourth tab adjoin each other in pairs and surround the filter body (Figures 3, 4, and 5). Regarding claims 16-19, the device further comprises reinforcement elements 14B and 15B, wherein at least at the first tab one of the reinforcement elements is arranged, are circumferential plastic rings (column 7 line 40). Regarding claim 20, the filter comprises at least one head strip 16 at an end surface of the filter body, wherein the end surface of the filter body extends perpendicularly to the seal section and along a lateral edge of the seal section (column 7 line 59). Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to SHARON PREGLER whose telephone number is (571)270-5051. The examiner can normally be reached Monday - Friday 9am - 5pm. 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, In Suk Bullock can be reached at (571) 272-5954. 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. /SHARON PREGLER/ Primary Examiner, Art Unit 1772
Read full office action

Prosecution Timeline

Apr 04, 2024
Application Filed
Jul 14, 2026
Non-Final Rejection mailed — §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
78%
Grant Probability
99%
With Interview (+21.1%)
2y 7m (~2m remaining)
Median Time to Grant
Low
PTA Risk
Based on 891 resolved cases by this examiner. Grant probability derived from career allowance rate.

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