Prosecution Insights
Last updated: August 16, 2026
Application No. 18/532,062

REMOVABLE SHEATH ASSEMBLY

Non-Final OA §103
Filed
Dec 07, 2023
Priority
Jun 17, 2021 — continuation of 63/212,072 +1 more
Examiner
DINH, ANH-KHOA N
Art Unit
3792
Tech Center
3700 — Mechanical Engineering & Manufacturing
Assignee
Edwards Lifesciences Corporation
OA Round
2 (Non-Final)
87%
Grant Probability
Favorable
2-3
OA Rounds
0m
Est. Remaining
99%
With Interview

Examiner Intelligence

Grants 87% — above average
87%
Career Allowance Rate
242 granted / 278 resolved
+17.1% vs TC avg
Strong +15% interview lift
Without
With
+15.4%
Interview Lift
resolved cases with interview
Typical timeline
2y 4m
Avg Prosecution
31 currently pending
Career history
301
Total Applications
across all art units

Statute-Specific Performance

§101
8.3%
-31.7% vs TC avg
§103
51.8%
+11.8% vs TC avg
§102
22.3%
-17.7% vs TC avg
§112
11.7%
-28.3% vs TC avg
Black line = Tech Center average estimate • Based on career data from 278 resolved cases

Office Action

§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 allowance or after an Office action under Ex Parte Quayle, 25 USPQ 74, 453 O.G. 213 (Comm'r Pat. 1935). 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, prosecution in this application has been reopened pursuant to 37 CFR 1.114. Applicant's submission filed on 06/29/2026 has been entered. Claim Interpretation In accordance to MPEP 2111.04, such term(s) as “configured to” in the claim(s) do not limit claim scope to the particular function performed, and merely suggest optional functionality since the claim does not introduce any structure that positively recites and limits the features of the invention for exclusive use as intended. Absent limiting structural features, limitations following said clauses will be interpreted as recitations of intended use, wherein prior art will be evaluated based on its capability of performing and its suitability for the intended use. A recitation of the intended use of the claimed invention must result in a structural difference between the claimed invention and the prior art in order to patentably distinguish the claimed invention from the prior art. If the prior art structure is capable of performing the intended use, then it meets the claim. "[A]pparatus claims cover what a device is, not what a device does." Hewlett-Packard Co. v. Bausch & Lomb Inc., 909 F.2d 1464, 1469, 15 USPQ2d 1525, 1528 (Fed. Cir. 1990). A claim containing a "recitation with respect to the manner in which a claimed apparatus is intended to be employed does not differentiate the claimed apparatus from a prior art apparatus" if the prior art apparatus teaches all the structural limitations of the claim, Ex parte Masham, 2 USPQ2d 1647 (Bd. Pat. App. & Inter. 1987). 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) 1 and 11-12 is/are rejected under 35 U.S.C. 103 as being unpatentable over Davis (US 20060041230 A1 – hereinafter Davis) in view of Stack (US 20210085848 A1 – hereinafter Stack). Re. claim 1, Davis teaches a sheath assembly comprising: a removable hub having a lumen extending therethrough and comprising: a first circumferential hub portion that spans a first circumferential segment about a longitudinal axis of the removable hub, (see at least figure 2 which shows a first hub portion 21), a second circumferential hub portion that spans a second circumferential segment about the longitudinal axis of the removable hub, the second circumferential segment being greater than the first circumferential segment, and first and second connector portions connecting the first circumferential hub portion and the second circumferential hub portion; (see at least figure 2 which shows a second hub portion 22. It is considered to be an obvious design choice yielding predictable results to make circumferential segments different sizes. For example, differently shaped medical devices to be inserted into the patient made require the hubs to be sized differently), and a removable shaft configured to extend distally from a distal end of the removable hub, the removable shaft being configured such that separation of the first circumferential hub portion from the second circumferential hub portion causes a first circumferential shaft portion to separate from a second circumferential shaft portion (see at least figure 2 which shows shaft 18. Further, the hub portions and shaft peel away from each other along tear lines 43,44, also see at least ¶72). Davis does not expressly teach a removable knob having a lumen extending therethrough, a distal portion of the removable knob being configured to be received within the lumen of the removable hub; and a removable seal configured to be received within the lumen of the removable hub distally of the distal portion of the removable knob, the removable seal comprising a lumen extending therethrough and being configured to be aligned with the lumen of the removable shaft and the lumen of the removable knob, wherein advancing the removable knob distally within the lumen of the removable hub compresses the removable seal. Stack teaches a similar sheath assembly (abstract – “Percutaneous access sheaths used to provide access to the vasculature and heart for the introduction of percutaneous ventricular assist devices (pVADs), and to remain in place for the duration of pVAD use”) which includes a removable knob (paragraph 0044 – “This proximal cap 64 has an opening on its proximal face, allowing access through the knob housing 62 into the lumen 20 of the sheath”) having a lumen extending therethrough, a distal portion of the removable knob being configured to be received within the lumen of the removable hub (paragraph 0045 – “As best seen in the exploded view of FIG. 10, the rotatable knob housing 62 includes first and second rings 62a, 62b, each having a central opening”), PNG media_image1.png 324 396 media_image1.png Greyscale and a removable seal (paragraph 0046 – “A seal 66 is disposed within the volume enclosed by the proximal housing 88 and the proximal cap 64. The seal is formed of elastomeric material such as silicone and may have a cylindrical shape or an alternate shape”), configured to be received within the lumen of the removable hub distally of the distal portion of the removable knob, the removable seal comprising a lumen extending therethrough and being configured to be aligned with the lumen of the removable shaft and the lumen of the removable knob, wherein advancing the removable knob distally within the lumen of the removable hub compresses the removable seal (paragraph 0046 – “The seal includes a seal lumen 68 oriented along the pathway between the opening of the sheath and the lumen 20, and preferably aligned with its longitudinal axis along the longitudinal axis of the lumen 20”). PNG media_image2.png 324 396 media_image2.png Greyscale Therefore, 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 sheath assembly of Davis, to incorporate the knob and seal parts as taught by Stack, since such modification would predictably result in providing structural integrity to the sheath assembly. Re. claim 11, Davis of the combined invention further teaches wherein the removable hub comprises a handle extending laterally from a proximal portion of the first circumferential hub portion, wherein pivoting the handle distally is configured to effect separation of the first circumferential hub portion from the second circumferential hub portion. (see at least Davis figure 2 which shows a handle 30; see also ¶64). Re. claim 12, Davis of the combined invention further teaches wherein a proximal portion of the removable shaft is received within a distal portion of the lumen of the removable hub and coupled to the removable hub within the distal portion of the lumen. (see at least Davis figure 4 which shows proximal portion of shaft 18 in distal portion of lumen 23). Allowable Subject Matter Claims 13-21 are allowed. Claims 3-10 are 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 of record, alone or in combination, fails to anticipate and/or render obvious to claim 13 in its entirety, including at least to a removable knob being configured to be split into two halves, and the lumen of the removable knob being configured to be aligned with a lumen of the removable shaft to allow advancement of at least a portion of a medical device through the lumen of the removable knob and into the lumen of the removable shaft, in combination with the other limitations of claim 13. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to Anh-Khoa N. Dinh whose telephone number is (571)272-7041. The examiner can normally be reached Mon-Fri 7:00am-4:00pm 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, DAVID HAMAOUI can be reached at 571-270-5625. 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. /ANH-KHOA N DINH/Examiner, Art Unit 3796
Read full office action

Prosecution Timeline

Dec 07, 2023
Application Filed
Oct 23, 2025
Non-Final Rejection mailed — §103
Jan 16, 2026
Response Filed
Jun 29, 2026
Request for Continued Examination
Jul 10, 2026
Response after Non-Final Action
Aug 04, 2026
Non-Final Rejection mailed — §103 (current)

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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
87%
Grant Probability
99%
With Interview (+15.4%)
2y 4m (~0m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 278 resolved cases by this examiner. Grant probability derived from career allowance rate.

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