Prosecution Insights
Last updated: April 17, 2026
Application No. 18/403,025

CONTAMINATION CONTAINMENT SHIELD

Non-Final OA §102§103
Filed
Jan 03, 2024
Examiner
HOLLY, LEE A
Art Unit
3726
Tech Center
3700 — Mechanical Engineering & Manufacturing
Assignee
unknown
OA Round
1 (Non-Final)
75%
Grant Probability
Favorable
1-2
OA Rounds
2y 7m
To Grant
81%
With Interview

Examiner Intelligence

Grants 75% — above average
75%
Career Allow Rate
434 granted / 578 resolved
+5.1% vs TC avg
Moderate +6% lift
Without
With
+6.2%
Interview Lift
resolved cases with interview
Typical timeline
2y 7m
Avg Prosecution
31 currently pending
Career history
609
Total Applications
across all art units

Statute-Specific Performance

§101
0.4%
-39.6% vs TC avg
§103
44.1%
+4.1% vs TC avg
§102
23.3%
-16.7% vs TC avg
§112
26.2%
-13.8% vs TC avg
Black line = Tech Center average estimate • Based on career data from 578 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 . In the event the determination of the status of the application as subject to AIA 35 U.S.C. 102 and 103 (or as subject to pre-AIA 35 U.S.C. 102 and 103) is incorrect, any correction of the statutory basis (i.e., changing from AIA to pre-AIA ) for the rejection will not be considered a new ground of rejection if the prior art relied upon, and the rationale supporting the rejection, would be the same under either status. 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. (a)(2) the claimed invention was described in a patent issued under section 151, or in an application for patent published or deemed published under section 122(b), in which the patent or application, as the case may be, names another inventor and was effectively filed before the effective filing date of the claimed invention. Claims 1-3 and 8 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Shinma (EP 1 842 612 A1). Claim 1: Shinma discloses a contamination shield (abstract) comprising: a sleeve (2) having a sleeve proximal end (19) and a sleeve distal end (4, 5), wherein the sleeve proximal end (19) is configured to attach to a chuck of a drill machine (fig. 1A, 3B; [0013] and [0014]); and an enclosure (1) having an enclosure proximal end (23) and an enclosure distal end, wherein the enclosure proximal end (23) is joined to the sleeve distal end (4, 5), and wherein the enclosure (1) is formed of a plurality of circular baffles (figs. 1 and 5; [0012] – see also annotated reproduction of fig. 5A, below). PNG media_image1.png 614 1066 media_image1.png Greyscale Claim 2: Shinma discloses the contamination shield of claim 1, wherein the plurality of circular baffles each have at least one ridge and at least one recess and wherein the at least one ridge has a greater diameter than the at least one recess (figs. 1 and 5; [0012] – see also annotated reproduction of fig. 5A, above). Claim 3: Shinma discloses the contamination shield of claim 1, further comprises a base ring (23) joined to the enclosure distal end (figs. 13; [0031] – see also annotated reproduction of fig. 5A, above). Claim 8: Shinma discloses a drill machine (50) (fig.5A, [0016]) comprising: a chuck (chucking mechanism) (fig. 5A, [0016]); and the contamination shield (1, 2) of claim 1 (figs. 1A, 3B; [0012]-[0014] – see also annotated reproduction f fig. 5A, above). Claims 1 and 4-6 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Machida (JP 7 766 504 B2) as provided by Machida (US 2023/0241737 A1) as an English language equivalent. Claim 1: Machida discloses a contamination shield (abstract) comprising: a sleeve (2) having a sleeve proximal end (4, 5) and a sleeve distal end (15), wherein the sleeve proximal end (4, 5) is configured to attach to a chuck of a drill machine (figs. 4-5; [0039] and [0054]); and an enclosure (3) having an enclosure proximal end (26) and an enclosure distal end, wherein the enclosure proximal end (26) is joined to the sleeve distal end (15), and wherein the enclosure (3) is formed of a plurality of circular baffles (figs. 4-5; [0043]). Claim 4: Machida discloses the contamination shield of claim 1, wherein the plurality of circular baffles is made of plastic (resin) (fig. 3A, [0038]). Claim 5: Machida discloses the contamination shield of claim 1, wherein the enclosure is configured to move between a compressed state and a decompressed state (fig. 3A, [0057]). Claim 6. Machida discloses the contamination shield of claim 5, wherein a length of the enclosure in the decompressed state is greater than or equal to a length of a drill bit (B) (figs. 2 and 3A, [0041]). Claims 1 and 7 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Famulari (EP 0 295 225 A1). Claim 1: Famulari discloses a contamination shield (abstract) comprising: a sleeve (5) having a sleeve proximal end and a sleeve distal end, wherein the sleeve proximal end is configured to attach to a chuck of a drill machine (fig. 1; col. 4, lines 19-34); and an enclosure (1) having an enclosure proximal end and an enclosure distal end, wherein the enclosure proximal end is joined to the sleeve distal end (at locking ring 5), and wherein the enclosure (1) is formed of a plurality of circular baffles (fig. 1; col. 4, lines 19-34). Claim 7: Famulari discloses the contamination shield of claim 1, wherein the plurality of circular baffles have graduated diameters such that the enclosure is conical in shape (fig. 1, col. 1, lines 52-54 and col. 4, lines 26-29). 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. The factual inquiries for establishing a background for determining obviousness under 35 U.S.C. 103 are summarized as follows: 1. Determining the scope and contents of the prior art. 2. Ascertaining the differences between the prior art and the claims at issue. 3. Resolving the level of ordinary skill in the pertinent art. 4. Considering objective evidence present in the application indicating obviousness or nonobviousness. In an alternative, claim 7 is rejected under 35 U.S.C. 103 as being unpatentable over Machida as applied to claim 1 above, and further in view of Famulari (EP 0 295 225 A1). Claim 7: Machida discloses the contamination shield of claim 1; and, Machida fails to disclose the plurality of circular baffles have graduated diameters such that the enclosure is conical in shape. Instead, Machida discloses multiple containment shields may have different shapes for different operations (Machida, [0064]). Famulari discloses a contamination shield comprising a sleeve (5) and an enclosure (1) comprising a plurality of circular baffles (bellows) (fig. 1; col. 4, lines 19-34); wherein the plurality of circular baffles (bellows) have graduated diameters such that the enclosure is conical in shape (fig. 1, col. 1, lines 52-54 and col. 4, lines 26-29). It would have been obvious to one of ordinary skill in the art, before the effective filing date of the claimed invention, to modify the contamination shield of Machida to have graduated diameters as taught by Famulari in order to improve compression behavior and surface conformity in Machida’s contamination shield (Famulari, col. 1, line 63 bridging col. 2, line 6 and col. 4, lines 39-51). The modification represents a predictable design choice within the same field addressing the same problem. See MPEP §2143 A which describes the prima facie obviousness of combining prior art elements according to known methods to yield predictable results. Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. Luu (US 2021/0069844 A1) discloses a dust-proof drilling apparatus. Any inquiry concerning this communication or earlier communications from the examiner should be directed to Lee Holly whose telephone number is (571)270-7097. The examiner can normally be reached Monday - Friday 8:00 to 5:00 EST. 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, Thomas Hong can be reached at (571) 272-0993. 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. /Lee A Holly/Primary Examiner, Art Unit 3726
Read full office action

Prosecution Timeline

Jan 03, 2024
Application Filed
Feb 16, 2026
Non-Final Rejection — §102, §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12594634
END EFFECTOR AND METHODS OF USE
2y 5m to grant Granted Apr 07, 2026
Patent 12589454
WELDING FINISHING DEVICE
2y 5m to grant Granted Mar 31, 2026
Patent 12583066
SYSTEM AND METHOD FOR REMOVING METAL FASTENERS EMBEDDED IN WOOD PRODUCTS
2y 5m to grant Granted Mar 24, 2026
Patent 12576450
Workpiece Holder And Machining Apparatus
2y 5m to grant Granted Mar 17, 2026
Patent 12569948
METHOD FOR USING HEAT DISSIPATION PLATE MANUFACTURING APPARATUS
2y 5m to grant Granted Mar 10, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

AI Strategy Recommendation

Get an AI-powered prosecution strategy using examiner precedents, rejection analysis, and claim mapping.
Powered by AI — typically takes 5-10 seconds

Prosecution Projections

1-2
Expected OA Rounds
75%
Grant Probability
81%
With Interview (+6.2%)
2y 7m
Median Time to Grant
Low
PTA Risk
Based on 578 resolved cases by this examiner. Grant probability derived from career allow rate.

Sign in for Full Analysis

Enter your email to receive a magic link. No password needed.

Free tier: 3 strategy analyses per month