Prosecution Insights
Last updated: April 19, 2026
Application No. 18/904,246

BLOWERS

Non-Final OA §102§103
Filed
Oct 02, 2024
Examiner
AYALA DELGADO, ANTHONY
Art Unit
3746
Tech Center
3700 — Mechanical Engineering & Manufacturing
Assignee
Milwaukee Electric Tool Corporation
OA Round
2 (Non-Final)
80%
Grant Probability
Favorable
2-3
OA Rounds
2y 6m
To Grant
98%
With Interview

Examiner Intelligence

Grants 80% — above average
80%
Career Allow Rate
553 granted / 696 resolved
+9.5% vs TC avg
Strong +18% interview lift
Without
With
+18.0%
Interview Lift
resolved cases with interview
Typical timeline
2y 6m
Avg Prosecution
30 currently pending
Career history
726
Total Applications
across all art units

Statute-Specific Performance

§101
3.4%
-36.6% vs TC avg
§103
39.7%
-0.3% vs TC avg
§102
30.8%
-9.2% vs TC avg
§112
23.4%
-16.6% vs TC avg
Black line = Tech Center average estimate • Based on career data from 696 resolved cases

Office Action

§102 §103
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 § 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) 18 is/are rejected under 35 U.S.C. 102(a)(1) as being anticipated by US 2021/0033115 to Hoffman et al. (Hoffman). In Reference to Claim 18 Hoffman discloses: A blower, comprising: a blower housing 76 defining an air inlet, an air outlet, and an airflow conduit between the air inlet and the air outlet; a fan 52 within the blower housing; a stator within the blower housing adjacent the fan; and 70 at least one liner within the blower housing between the stator and the air outlet, wherein the at least one liner is formed from a damper material 80, wherein the at least one liner is coupled to an interior surface of the blower housing and defines at least a portion of the airflow conduit, see paragraph [0086]. 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. Claim(s) 20 is/are rejected under 35 U.S.C. 103 as being unpatentable over US 2021/0033115 to Hoffman et al. (Hoffman). In Reference to Claim 20 Hoffman discloses: the at least one liner comprises a first liner; Hoffman does not disclose: and the blower further comprises a second liner within the blower housing between the air inlet and the fan, the second liner formed from the damper material. At the time claimed invention was filed it would have been obvious to an artisan of ordinary skill to include as much liner material and add a second liner since this would enable the practitioner of the primary reference to practice the advantage of further reducing unwanted noise. Reasons for Allowance The following is a statement of reasons for the indication of allowable subject matter: Claims are allowed primarily because the prior art of record cannot anticipate Applicant’s claimed invention by a single reference nor render Applicant’s claimed invention obvious by the combination of more than one reference. Furthermore, the prior art of record does not teach “each of the plurality of guide members comprising a receptacle configured to receive a portion of the stator and at least one elongated rib extending from the receptacle; and a blower tube removably coupled to the air outlet of the blower housing, at least a portion of the blower housing and the blower tube defining an airflow conduit.” as within the context of the claimed invention as disclosed and within the context of the other limitations present in claim 1; The prior art of record does not teach “wherein the outer wall and the first end of the inner wall are removably coupled to the air outlet of the blower housing, wherein the outer wall comprises a first portion extending from an exterior surface of the inner wall and a second portion extending from the first portion, andwherein a cavity for receiving at least a portion of the blower housing is defined between the first portion and the inner wall.” as within the context of the claimed invention as disclosed and within the context of the other limitations present in claim 12; and Therefore, the prior art of record cannot anticipate Applicant’s claimed invention by a single reference nor render Applicant’s claimed invention obvious by the combination of more than one reference. Any comments considered necessary by applicant must be submitted no later than the payment of the issue fee and, to avoid processing delays, should preferably accompany the issue fee. Such submissions should be clearly labeled “Comments on Statement of Reasons for Allowance.” Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to ANTHONY AYALA DELGADO whose telephone number is (571)270-3452. The examiner can normally be reached on Mon-Fri 8:00-5:00. 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, Mark III Laurenzi can be reached on (571) 270-7878. The fax phone number for the organization where this application or proceeding is assigned is 571-273-8300. Information regarding the status of an application may be obtained from the Patent Application Information Retrieval (PAIR) system. Status information for published applications may be obtained from either Private PAIR or Public PAIR. Status information for unpublished applications is available through Private PAIR only. For more information about the PAIR system, see http://pair-direct.uspto.gov. Should you have questions on access to the Private PAIR system, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). If you would like assistance from a USPTO Customer Service Representative or access to the automated information system, call 800-786-9199 (IN USA OR CANADA) or 571-272-1000. /ANTHONY AYALA DELGADO/ Primary Examiner, Art Unit 3746
Read full office action

Prosecution Timeline

Oct 02, 2024
Application Filed
Sep 08, 2025
Non-Final Rejection — §102, §103
Dec 11, 2025
Response Filed
Mar 21, 2026
Non-Final Rejection — §102, §103 (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

2-3
Expected OA Rounds
80%
Grant Probability
98%
With Interview (+18.0%)
2y 6m
Median Time to Grant
Moderate
PTA Risk
Based on 696 resolved cases by this examiner. Grant probability derived from career allow rate.

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