Prosecution Insights
Last updated: April 19, 2026
Application No. 18/256,762

SURGICAL DRAINAGE DEVICE

Non-Final OA §102§103
Filed
Jun 09, 2023
Examiner
DEAK, LESLIE R
Art Unit
3799
Tech Center
3700 — Mechanical Engineering & Manufacturing
Assignee
Azienda Sanitaria Universitaria Friuli Centrale
OA Round
1 (Non-Final)
75%
Grant Probability
Favorable
1-2
OA Rounds
3y 4m
To Grant
93%
With Interview

Examiner Intelligence

Grants 75% — above average
75%
Career Allow Rate
693 granted / 924 resolved
+5.0% vs TC avg
Strong +18% interview lift
Without
With
+18.0%
Interview Lift
resolved cases with interview
Typical timeline
3y 4m
Avg Prosecution
43 currently pending
Career history
967
Total Applications
across all art units

Statute-Specific Performance

§101
1.8%
-38.2% vs TC avg
§103
47.9%
+7.9% vs TC avg
§102
25.1%
-14.9% vs TC avg
§112
11.4%
-28.6% vs TC avg
Black line = Tech Center average estimate • Based on career data from 924 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. (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 1-7 and 9-13 are rejected under 35 U.S.C. 102(a)(1) and (a)(2) as being anticipated by US 2020/0016382 to Kang et al. In the specification and figures, Kang discloses the apparatus as claimed by Applicant With regard to claim 1, Kang discloses a surgical drainage device with a first tubular body 200 with a first lateral surface with a first passage aperture 250a, inside the first tubular body there being a second tubular body 100 with a second passage aperture 110a therein, allowing fluid communication between the bodies (see FIG 4, ¶0036, 0038). The first passage aperture and second passage aperture divide the first tubular body 210 and second tubular body 110 into two respective oblong portions (see area 200 in FIG 4) and first 210 and second 110 terminal portions. In a first operating configuration, second terminal portion 110 is outside first tubular body 200, forming a T shape with the first terminal portion 210 (see FIG 4). In a second operating configuration, tube 100 is within tube 200 and the first passage aperture 250 a is not engaged by a second body (see FIGS 8, 9, and accompanying text). With regard to claims 2-3, 11, Kang illustrates that the tubular bodies 200, 100 are discrete components and that the second tubular body 100 slides within first tubular body 200 such that the second terminal portion 110 protrudes past first passage aperture 250a, branching from the first terminal portion 210 (see FIG 4). With regard to claims 4, 5, 9, 12, 13, Kang illustrates that first operating configuration (FIG 4) creates a bulk larger than the second operating configuration, wherein second tube 100 is coaxially inside first tube 200, which has a slightly larger diameter than second tube 100 (FIG 9). With regard to claims 6 and 7, Kang illustrates that in the first operating configuration, the first and second passage apertures 250a, 110a, are aligned with and opposite each other (see FIG 4), and that the passage gap substantially equal to an external diameter of second tube 100 (see FIGS 6, 9). With regard to claim 10, the placement of the device does not add patentably distinct limitations over the Kang reference, and so is anticipated by Kang. 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 8 is rejected under 35 U.S.C. 103 as being unpatentable over US 2020/0016382 to Kang et al. In the specification and figures, Kang discloses the apparatus substantially as claimed by Applicant. With regard to claim 8, Kang illustrates that the lengths of the terminal portions 210, 110 of the tubes are roughly the same length, but does not illustrate that the second oblong segment has a greater length than the first oblong segment 200. However, it has been held that where the only difference between the prior art and the claims was a recitation of relative dimensions of the claimed device and a device having the claimed relative dimensions would not perform differently than the prior art device, the claimed device was not patentably distinct from the prior art device. See MPEP 2144.04(IV)(B). In the instant case, the length of the oblong segments relative to one another do not affect the function of the device disclosed by Kang, rendering the instant claim unpatentable over the prior art. Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure: US 5,380,290 Makower et al Multiple tube paths from single vessel US 2005/0075647 Walters et al Drainage tool Any inquiry concerning this communication or earlier communications from the examiner should be directed to LESLIE R DEAK whose telephone number is (571)272-4943. The examiner can normally be reached Monday-Friday, 9am to 5:30pm. 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, Sarah Al-Hashimi can be reached at 571-272-7159. 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. /LESLIE R DEAK/Primary Examiner, Art Unit 3799 15 December 2025
Read full office action

Prosecution Timeline

Jun 09, 2023
Application Filed
Dec 16, 2025
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

1-2
Expected OA Rounds
75%
Grant Probability
93%
With Interview (+18.0%)
3y 4m
Median Time to Grant
Low
PTA Risk
Based on 924 resolved cases by this examiner. Grant probability derived from career allow rate.

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