Prosecution Insights
Last updated: April 19, 2026
Application No. 18/302,610

MEMS STRUCTURE INCLUDING A BURIED CAVITY WITH ANTISTICTION PROTUBERANCES, AND MANUFACTURING METHODS THEREOF

Non-Final OA §102
Filed
Apr 18, 2023
Examiner
GEBREMARIAM, SAMUEL A
Art Unit
2811
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
STMicroelectronics
OA Round
1 (Non-Final)
83%
Grant Probability
Favorable
1-2
OA Rounds
2y 10m
To Grant
92%
With Interview

Examiner Intelligence

Grants 83% — above average
83%
Career Allow Rate
685 granted / 825 resolved
+15.0% vs TC avg
Moderate +9% lift
Without
With
+8.9%
Interview Lift
resolved cases with interview
Typical timeline
2y 10m
Avg Prosecution
19 currently pending
Career history
844
Total Applications
across all art units

Statute-Specific Performance

§101
0.4%
-39.6% vs TC avg
§103
36.5%
-3.5% vs TC avg
§102
31.3%
-8.7% vs TC avg
§112
21.2%
-18.8% vs TC avg
Black line = Tech Center average estimate • Based on career data from 825 resolved cases

Office Action

§102
02610Notice 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 . Applicant’s election without traverse of claims 8-20 in the reply filed on 10/23/25 is acknowledged. Claim Objections Claim 21 is objected to because of the following informalities: the limitation “pluralities” in line 6 of claim 21 appears to be a typographical error. Appropriate correction is required. 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) 19-20 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Caplet, EP 2075224. Regarding claim 19, Caplet discloses (figs. 1-5 and related text) a method for manufacturing a structure, the method comprising: forming, in a first die, a first recess (cavity 110 left side); forming, in the first recess, a first antistiction bump (116/118); forming, in a second die, a second recess (cavity right side); and coupling the first die to the second die by coupling regions (fig. 5), the first and the second recesses form, together, a cavity which contains the first antistiction bump (116/118). Regarding claim 20, Caplet discloses in the second recess, a second (cavity 110 on the right) antistiction bump (118/116), wherein the cavity contains the second antistiction bump (118/116). Allowable Subject Matter Claims 8-18 and 21-27 are allowed. Allowable Subject Matter The following is a statement of reasons for the indication of allowable subject matter: The prior art of record does not teach or suggest, singularly or in combination at least the limitation “at a second surface region of the semiconductor body, contiguous to said first surface region, at least one second columnar portion having a second value of base area different from the first value of base area; epitaxially growing, above said first and second columnar portions and said first trenches, a membrane layer of semiconductor material; and annealing that causes the migration of the semiconductor material of said first and second columnar portions concurrently forming: a buried cavity in the semiconductor body below the membrane layer, internally delimited by a first wall, a second wall opposite to the first wall, and third and fourth walls coupled between the first wall with the second wall; and at least one first antistiction bump, completely contained in the cavity, protruding from one of the first wall and the second wall” is the first major difference and the second difference is the limitation “a plurality of first columns surrounded by a plurality of first trenches, each first column having a first base area; forming, in the first surface, a plurality of second columns surrounded by a plurality of second trenches, each second column having a second base area greater than the first base area; forming a first membrane layer on the first surface and the first and second plurality of columns; and forming a cavity in the semiconductor substrate, the forming the cavity including: a first wall on the first membrane layer, the first wall including a first antistiction bump; and a second wall opposite the first wall, the second wall including a second antistiction bump” as recited in claim 21. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to SAMUEL A GEBREMARIAM whose telephone number is (571)272-1653. The examiner can normally be reached 8:30-4PM. 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, Lynne Gurley can be reached at 571-272-1670. 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. /SAMUEL A GEBREMARIAM/Primary Examiner, Art Unit 2811
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Prosecution Timeline

Apr 18, 2023
Application Filed
Jan 10, 2026
Non-Final Rejection — §102 (current)

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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
83%
Grant Probability
92%
With Interview (+8.9%)
2y 10m
Median Time to Grant
Low
PTA Risk
Based on 825 resolved cases by this examiner. Grant probability derived from career allow rate.

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