Prosecution Insights
Last updated: April 19, 2026
Application No. 18/284,609

Expansion Anchor

Non-Final OA §103
Filed
Sep 28, 2023
Examiner
SAETHER, FLEMMING
Art Unit
3675
Tech Center
3600 — Transportation & Electronic Commerce
Assignee
Hilti Aktiengesellschaft
OA Round
1 (Non-Final)
65%
Grant Probability
Moderate
1-2
OA Rounds
3y 1m
To Grant
94%
With Interview

Examiner Intelligence

Grants 65% of resolved cases
65%
Career Allow Rate
1061 granted / 1636 resolved
+12.9% vs TC avg
Strong +29% interview lift
Without
With
+28.9%
Interview Lift
resolved cases with interview
Typical timeline
3y 1m
Avg Prosecution
48 currently pending
Career history
1684
Total Applications
across all art units

Statute-Specific Performance

§101
0.1%
-39.9% vs TC avg
§103
37.2%
-2.8% vs TC avg
§102
30.5%
-9.5% vs TC avg
§112
28.4%
-11.6% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1636 resolved cases

Office Action

§103
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 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 3 and 4 are rejected under 35 U.S.C. 103 as being unpatentable over Hangesbach (US 5,419,664) in view of Weber (5,314,278). Hangesbach discloses an expansion anchor comprising: an anchor bolt (1); an expansion sleeve (5) surrounding the anchor bolt; a wedge body (4) located at the front of the bolt for expanding the expansion sleeve; a slit (6) formed withing the expansion sleeve; the slit having a mouth at a front face leading to a stem; the stem is delimited by first and second flanks (15) which are non-parallel to from widening and narrowing areas along the stem. PNG media_image1.png 214 512 media_image1.png Greyscale Hangesbach does not disclose the slit having an enlarged head. Weber discloses an expansion anchor similar to Hangesbach but in Weber a slit (6) in an expansion sleeve (5) includes an enlarged head (11) where the head is wider than a stem (WO > SW). Before the effective filing date of the claimed invention it would have been obvious for one of ordinary skill in the art to provide the slit in Hangesbach with an enlarged head as disclosed in Weber to facilitate the expansion of the expansion sleeve (column 2, lines 8-14). Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. Yekutiely (US 2002/0194718) and Huang (US 6,309,155) teach another examples of a slit with non-parallel flanks. The other references cited are of general interest. Any inquiry concerning this communication or earlier communications from the examiner should be directed to FLEMMING SAETHER whose telephone number is (571)272-7071. The examiner can normally be reached M-F 8:30 - 7:00 eastern. 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, Christine Mills can be reached at 571-272-8322. 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. /FLEMMING SAETHER/Primary Examiner, Art Unit 3675
Read full office action

Prosecution Timeline

Sep 28, 2023
Application Filed
Jan 23, 2026
Non-Final Rejection — §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

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2y 5m to grant Granted Apr 14, 2026
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Patent 12584511
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2y 5m to grant Granted Mar 24, 2026
Patent 12571482
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2y 5m to grant Granted Mar 10, 2026
Patent 12565301
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2y 5m to grant Granted Mar 03, 2026
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
65%
Grant Probability
94%
With Interview (+28.9%)
3y 1m
Median Time to Grant
Low
PTA Risk
Based on 1636 resolved cases by this examiner. Grant probability derived from career allow rate.

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