Prosecution Insights
Last updated: April 19, 2026
Application No. 18/676,845

REACTION CHAMBER AND OXIDATION DEVICE

Non-Final OA §112
Filed
May 29, 2024
Examiner
SATHIRAJU, SRINIVAS
Art Unit
2844
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Beijing E-Town Semiconductor Technology Co. Ltd.
OA Round
1 (Non-Final)
89%
Grant Probability
Favorable
1-2
OA Rounds
2y 2m
To Grant
94%
With Interview

Examiner Intelligence

Grants 89% — above average
89%
Career Allow Rate
715 granted / 806 resolved
+20.7% vs TC avg
Moderate +5% lift
Without
With
+5.2%
Interview Lift
resolved cases with interview
Typical timeline
2y 2m
Avg Prosecution
30 currently pending
Career history
836
Total Applications
across all art units

Statute-Specific Performance

§101
2.1%
-37.9% vs TC avg
§103
43.6%
+3.6% vs TC avg
§102
17.6%
-22.4% vs TC avg
§112
16.7%
-23.3% vs TC avg
Black line = Tech Center average estimate • Based on career data from 806 resolved cases

Office Action

§112
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 Rejections - 35 USC § 112 The following is a quotation of 35 U.S.C. 112(b): (b) CONCLUSION.—The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the inventor or a joint inventor regards as the invention. The following is a quotation of 35 U.S.C. 112 (pre-AIA ), second paragraph: The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the applicant regards as his invention. Claims 1-20 are rejected under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), second paragraph, as being indefinite for failing to particularly point out and distinctly claim the subject matter which the inventor or a joint inventor (or for applications subject to pre-AIA 35 U.S.C. 112, the applicant), regards as the invention. Referring to claim 1 it recites the limitations a, wafer, a reaction area and the reaction is not lower than a top surface of the wafer in lines 1-4. In the drawings Fig 1-10 clearly suggests that item 11 is a reaction volume in cylindrical shape. The top surface of the cylinder is represented by numeral reference 111 is above the wafer top surface. It is not clear to the examiner how to interpret the limitation top surface of the reaction area is not lower than the top surface of the wafer. Also, it is not clear to examiner on how to estimate the scope of the limitation and what exactly applicant is trying to seek protection for. Hence, claim 1 and depending claims are indefinite. Hence, claim 1 and depending claims are indefinite and rejected under indefiniteness. Referring to claim 12 it recites the limitations a, wafer, a reaction area and the reaction is not lower than a top surface of the wafer in lines 1-5. In the drawings Fig 1 -10 clearly suggests that item 11 is a reaction volume in cylindrical shape. The top surface of the cylinder is represented by numeral reference 111. Hence, it is not clear to the examiner how to interpret the limitation top surface of the reaction area is not lower than the top surface of the wafer. Also, it is not clear to examiner how to interpret the scope of the limitation and what exactly applicant is trying to seek protection for. Hence, claim 12 and depending claims are indefinite and rejected under indefiniteness. Conclusion Claims 1-20 are rejected. Any inquiry concerning this communication or earlier communications from the examiner should be directed to SRINIVAS SATHIRAJU whose telephone number is (571)272-4250. The examiner can normally be reached 8:30AM-5.30 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, Regis J Betsch can be reached at 571-270-7101. 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. /SRINIVAS SATHIRAJU/Examiner, Art Unit 2844 11/01/2025
Read full office action

Prosecution Timeline

May 29, 2024
Application Filed
Nov 01, 2025
Non-Final Rejection — §112 (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
89%
Grant Probability
94%
With Interview (+5.2%)
2y 2m
Median Time to Grant
Low
PTA Risk
Based on 806 resolved cases by this examiner. Grant probability derived from career allow rate.

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