Prosecution Insights
Last updated: April 19, 2026
Application No. 17/760,852

DISPOSABLE STERILE COVER SYSTEM, COMPONENTS, AND METHODS FOR POWER TOOLS

Non-Final OA §102§103
Filed
Mar 16, 2022
Examiner
POON, ROBERT
Art Unit
3735
Tech Center
3700 — Mechanical Engineering & Manufacturing
Assignee
Arbutus Medical Inc.
OA Round
3 (Non-Final)
41%
Grant Probability
Moderate
3-4
OA Rounds
3y 5m
To Grant
68%
With Interview

Examiner Intelligence

Grants 41% of resolved cases
41%
Career Allow Rate
383 granted / 925 resolved
-28.6% vs TC avg
Strong +27% interview lift
Without
With
+26.7%
Interview Lift
resolved cases with interview
Typical timeline
3y 5m
Avg Prosecution
87 currently pending
Career history
1012
Total Applications
across all art units

Statute-Specific Performance

§101
0.2%
-39.8% vs TC avg
§103
44.2%
+4.2% vs TC avg
§102
22.6%
-17.4% vs TC avg
§112
29.1%
-10.9% vs TC avg
Black line = Tech Center average estimate • Based on career data from 925 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 . Continued Examination Under 37 CFR 1.114 A request for continued examination under 37 CFR 1.114, including the fee set forth in 37 CFR 1.17(e), was filed in this application after final rejection. Since this application is eligible for continued examination under 37 CFR 1.114, and the fee set forth in 37 CFR 1.17(e) has been timely paid, the finality of the previous Office action has been withdrawn pursuant to 37 CFR 1.114. Applicant's submission filed on 5/19/2025 has been entered. Claim Rejections - 35 USC § 102 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. 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) 1-2, 4-5, 9, 11, 70-72 is/are rejected under 35 U.S.C. 102a1 as being anticipated by US 2017/0027658 to Black et al. (Black). Regarding claim 1, Black discloses a disposable cover system (Fig 1) for a power tool, the system comprising a cover (11) comprising a sterile outside surface, the cover defining an inner cavity, an opening (14) through which the power tool (12) is insertable into the inner cavity, an aperture (Fig 3, €0041) through which a pass-through (20) to transmit movement generated by the power tool from inside the inner cavity to outside the cover is extendable, a closing mechanism (16) to close the opening, a compressible gasket (22) surrounding the aperture and extending radially from the aperture along the cover (11), the compressible gasket (22) configured for compression in an axial direction between compression surfaces at opposite side of the cover to form a compression seal around the aperture (€0043, €0079). In particular, the gasket (22) forms a compression seal around the aperture when sealed to the cover and can be compressed by compression surfaces at opposite sides of the cover since it has the structure as recited. Regarding claim 2, Black further discloses the compressible gasket (22) attached to the cover (11). Regarding claim 4, Black further discloses the compressible gasket (22) comprising a sterile compressible gasket disposed on the sterile outside surface of the cover (11) (Fig 4, €0067-0068). Regarding claim 5, Black further discloses a further compressible gasket (24) disposed on inside surface of the cover (11) inside the inner cavity surrounding the aperture (Fig 4). Regarding claim 9, Black further discloses closing mechanism (16) attached to the cover (10). Regarding claim 11, Black further discloses closing mechanism (16) arranged to permanently close the opening since it has the structure as recited. Regarding claim 70-72, Black further discloses the cover system of claim 1 capable of functioning with the recited compression surfaces since it has the structure as recited. Claim Rejections - 35 USC § 103 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. 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) 6-7 is/are rejected under 35 U.S.C. 103 as being unpatentable over Black in view of US Patent No. 6,716,215 to David et al. (David). Regarding claim 6, Black discloses the cover system of claim 1 but does not teach the gasket extending axially in the aperture. However, David discloses a cover system (Fig 1) and in particular discloses a gasket (33) that extends axially into aperture (30). One of ordinary skill in the art would have found it obvious to have the Black gasket extend axially into the aperture as suggested by David in order to facilitate sealing. Regarding claim 7, the modified Black teaches the system of claim 6 and Black further teaches compressible gasket (22) further extending radially from the aperture along the sterile outside surface of the cover (11) (Fig 4). Claim(s) 14 is/are rejected under 35 U.S.C. 103 as being unpatentable over Black in view of US 2018/0200014 to Bonny et al. (Bonny). Regarding claim 14, Black teaches the cover system of claim 1 but does not teach a cover fitting mechanism. However, Bonny discloses a cover system (Fig 1) and in particular discloses cover fitting mechanism (54) operable to fit a portion of the cover to a shape of a power tool, wherein the cover fitting mechanism (54) is attached to the cover (22) or cover comprises the cover fitting mechanism (54). One of ordinary skill in the art would have found it obvious to incorporate a cover fitting mechanism to Black as suggested by Bonny in order to facilitate covering of the tool. Claim(s) 17 is/are rejected under 35 U.S.C. 103 as being unpatentable over Black in view of Bonny and US 2019/0099232 to Soto et al. (Soto). Regarding claim 17, the modified Black teaches the cover system of claim 14 but does not teach the cover fitting mechanism comprising a strap. However, Soto discloses a cover system (Fig 6) and in particular discloses a cover fitting mechanism comprising a strap (56), the strap comprising a detachable end operable to be detached from the cover, wrapped around the portion of the cover and reattached to the cover to fit the portion of the cover to the shape of the power tool (Fig 6). One of ordinary skill in the art would have found it obvious to substitute the cover fitting mechanism of the modified Black with a functionally equivalent cover fitting mechanism comprising a strap as suggested by Soto in order to fit the cover onto the tool since it has been held that simple substitution of one known element for another would have been obvious. In re Fout, 675 F.2d 297, 301, 213 USPQ 532, 534 (CCPA 1982). Claim(s) 25-27 is/are rejected under 35 U.S.C. 103 as being unpatentable over Black in view of US 2017/0000361 to Meyering et al. (Meyering). Regarding claims 25-27, Black discloses the cover system of claim 1 but does not teach a one-way air valve on the cover. However, Meyering discloses a cover (160, Fig 3b) and in particular discloses the cover comprising a one-way air valve with a filter (168, €0035). One of ordinary skill in the art would have found it obvious to incorporate a valve and filter to the Black cover as suggested by Meyering in order to enable flow of air between the inside and outside of the cover (Meyering, €0035). Response to Arguments Applicant's arguments filed 5/19/2025 have been fully considered but they are not persuasive. Initially, it is noted that applicant does not argue the rejection of the dependent claims. Applicant argues that prior art did not teach a compressible gasket surrounding the aperture and extending radially from the aperture along the cover and configured for compression in an axial direction between compression surface at opposite sides of the cover to form a compression seal around the aperture. However, Black discloses a baseplate (22) that can function as a compressible gasket, and as shown in Fig 4, the baseplate (22) surrounds the aperture and extends radially from the aperture along the cover (11), and is configured for compression in axial direction between compression surfaces at opposite sides of the cover since it has the structure as recited. In particular Black further discloses that the baseplate forms a seal around the aperture of the cover (€0079). Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to ROBERT POON whose telephone number is (571)270-7425. The examiner can normally be reached Monday thru Friday, 8:30 am to 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, Anthony Stashick can be reached at (571)272-4561. 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. /ROBERT POON/ Examiner, Art Unit 3735
Read full office action

Prosecution Timeline

Mar 16, 2022
Application Filed
Dec 10, 2024
Non-Final Rejection — §102, §103
Feb 21, 2025
Response Filed
Mar 03, 2025
Final Rejection — §102, §103
Apr 30, 2025
Interview Requested
May 12, 2025
Applicant Interview (Telephonic)
May 12, 2025
Examiner Interview Summary
May 19, 2025
Response after Non-Final Action
Jun 05, 2025
Request for Continued Examination
Jun 09, 2025
Response after Non-Final Action
Oct 18, 2025
Non-Final Rejection — §102, §103
Nov 14, 2025
Interview Requested
Dec 16, 2025
Applicant Interview (Telephonic)
Dec 17, 2025
Examiner Interview Summary

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

3-4
Expected OA Rounds
41%
Grant Probability
68%
With Interview (+26.7%)
3y 5m
Median Time to Grant
High
PTA Risk
Based on 925 resolved cases by this examiner. Grant probability derived from career allow rate.

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