Prosecution Insights
Last updated: July 17, 2026
Application No. 18/943,158

FITTINGS FOR WAFER CLEANING SYSTEMS

Non-Final OA §101
Filed
Nov 11, 2024
Priority
Aug 12, 2021 — provisional 63/232,276 +1 more
Examiner
DUNWOODY, AARON M
Art Unit
3679
Tech Center
3600 — Transportation & Electronic Commerce
Assignee
Taiwan Semiconductor Manufacturing Company, Ltd.
OA Round
1 (Non-Final)
75%
Grant Probability
Favorable
1-2
OA Rounds
1y 0m
Est. Remaining
86%
With Interview

Examiner Intelligence

Grants 75% — above average
75%
Career Allowance Rate
1221 granted / 1627 resolved
+23.0% vs TC avg
Moderate +12% lift
Without
With
+11.5%
Interview Lift
resolved cases with interview
Typical timeline
2y 9m
Avg Prosecution
42 currently pending
Career history
1665
Total Applications
across all art units

Statute-Specific Performance

§101
0.7%
-39.3% vs TC avg
§103
19.9%
-20.1% vs TC avg
§102
63.1%
+23.1% vs TC avg
§112
13.7%
-26.3% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1627 resolved cases

Office Action

§101
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 . Double Patenting A rejection based on double patenting of the “same invention” type finds its support in the language of 35 U.S.C. 101 which states that “whoever invents or discovers any new and useful process... may obtain a patent therefor...” (Emphasis added). Thus, the term “same invention,” in this context, means an invention drawn to identical subject matter. See Miller v. Eagle Mfg. Co., 151 U.S. 186 (1894); In re Vogel, 422 F.2d 438, 164 USPQ 619 (CCPA 1970); In re Ockert, 245 F.2d 467, 114 USPQ 330 (CCPA 1957). A statutory type (35 U.S.C. 101) double patenting rejection can be overcome by canceling or amending the claims that are directed to the same invention so they are no longer coextensive in scope. The filing of a terminal disclaimer cannot overcome a double patenting rejection based upon 35 U.S.C. 101. Claims 1 and 3-8 is/are rejected under 35 U.S.C. 101 as claiming the same invention as that of claims 1 and 3-8 of prior U.S. Patent No. 12,237,179. This is a statutory double patenting rejection. Allowable Subject Matter Claim 9-20 are allowed. Claim 2 is 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. The following is a statement of reasons for the indication of allowable subject matter: The prior art does not disclose a method of making a wafer cleaning system, comprising: inserting a flanged pipe into a threaded hole of a base plate such that a flange of the flanged pipe rests on a stop surface of the base plate and so that a hollow tube of the flanged pipe passes through a channel of the base plate and out a lower surface of the base plate; inserting a threaded connector into the threaded hole to fix the flanged pipe in place; fastening the base plate to a support bar of an arm; attaching an upper brush to a rotatable shaft of the arm; and installing the arm in a scrubbing chamber of the wafer cleaning system (claim 9). The prior art does not disclose a method of using a brush to clean a wafer, comprising: inserting the wafer into a scrubbing chamber; holding the wafer in place using wafer retention arms; providing a washing fluid through a fitting comprising: a base plate comprising a threaded hole with a stop surface therein and a channel extending from the stop surface through a lower surface of the base plate; a flanged pipe comprising a hollow tube and a flange at an end of the hollow tube, inserted into the base plate such that the flange rests on the stop surface and the hollow tube passes through the channel of the base plate; and a threaded connector having a hole therethrough, the threaded connector engaging the threaded hole to fix the flanged pipe in place; wherein the flanged pipe is fixed in place and cannot contact a brush within the scrubbing chamber; and scrubbing the wafer with the brush (claim 17). Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure because it illustrates the state of the art. Any inquiry concerning this communication or earlier communications from the examiner should be directed to AARON M DUNWOODY whose telephone number is (571)272-7080. The examiner can normally be reached Monday - Friday 9:00 am - 6:00 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, Matthew Troutman can be reached at 571-270-3654. 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. /AARON M DUNWOODY/Primary Examiner, Art Unit 3679
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Prosecution Timeline

Nov 11, 2024
Application Filed
Apr 20, 2026
Non-Final Rejection mailed — §101
Jun 22, 2026
Interview Requested
Jun 29, 2026
Examiner Interview Summary
Jun 29, 2026
Applicant Interview (Telephonic)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12674633
FLOATING JOINT AND RETAINER CONNECTION STRUCTURE
2y 0m to grant Granted Jul 07, 2026
Patent 12674536
FEMALE END ASSEMBLY AND CONNECTOR
1y 5m to grant Granted Jul 07, 2026
Patent 12668344
Outboard motor quick connect system
2y 7m to grant Granted Jun 30, 2026
Patent 12669203
COUPLING DEVICE FOR A TUBE
1y 9m to grant Granted Jun 30, 2026
Patent 12663104
CHAMFER RING FOR PIPE COUPLING
1y 2m to grant Granted Jun 23, 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
75%
Grant Probability
86%
With Interview (+11.5%)
2y 9m (~1y 0m remaining)
Median Time to Grant
Low
PTA Risk
Based on 1627 resolved cases by this examiner. Grant probability derived from career allowance rate.

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