Prosecution Insights
Last updated: April 19, 2026
Application No. 18/352,493

ARTIFICIAL BLOOD VESSEL COMPLEX

Non-Final OA §102§103
Filed
Jul 14, 2023
Examiner
WILLSE, DAVID H
Art Unit
3774
Tech Center
3700 — Mechanical Engineering & Manufacturing
Assignee
UNIVERSITY OF ULSAN FOUNDATION FOR INDUSTRY COOPERATION
OA Round
1 (Non-Final)
68%
Grant Probability
Favorable
1-2
OA Rounds
3y 11m
To Grant
80%
With Interview

Examiner Intelligence

Grants 68% — above average
68%
Career Allow Rate
388 granted / 575 resolved
-2.5% vs TC avg
Moderate +13% lift
Without
With
+12.9%
Interview Lift
resolved cases with interview
Typical timeline
3y 11m
Avg Prosecution
40 currently pending
Career history
615
Total Applications
across all art units

Statute-Specific Performance

§101
0.7%
-39.3% vs TC avg
§103
49.7%
+9.7% vs TC avg
§102
22.8%
-17.2% vs TC avg
§112
12.1%
-27.9% vs TC avg
Black line = Tech Center average estimate • Based on career data from 575 resolved cases

Office Action

§102 §103
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 . Specification The disclosure is objected to because of the following informalities: On page 11, line 9, “curbed” should read --curved--. On page 12, line 7, “is” should be replaced by --are-- in order to provide proper grammatical syntax. Appropriate correction is required. 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. Claims 1-2 are rejected under 35 U.S.C. 102(a)(1) as being clearly anticipated by Duran, US 5,258,021. Figures 12-15 illustrate an artificial blood vessel complex comprising an artificial blood vessel tube member 20 defining an artificial blood vessel tube portion and a lounge tube portion separated into three pieces and having an end formed in a curved shape to match an artificial blood vessel ring member 1 for suturing an aortic root through a suture (column 4, lines 26-40; column 5, lines 7-12; column 8, lines 19-23) and having a curved shape with inflection portions to correspond to a shape of an aortic root edge (abstract; column 3, lines 44-65). 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. Claims 3-9 are rejected under 35 U.S.C. 103 as being unpatentable over Duran, US 5,258,021. Regarding claims 3 and 9, “the stent is covered with biocompatible cloth”, and Duran indicates that such a cloth enclosing “various plastic and/or metal members [is] known in the art” (column 4, lines 8-12; emphasis added); to incorporate an elastic part surrounding a titanium alloy core part (column 5, lines 62-68) of ring member 1 would thus have been obvious to the ordinary practitioner at the effective filing date of the present invention in order to impart cushioning and/or sufficient volume for suturing (column 8, lines 19-28), with the outer skin or fabric part being rather thin (column 4, lines 13-15). Regarding claims 4-6, convexity would then be formed in all directions along a cross-section of ring member 1 (Figures 14-15) and is capable (MPEP § 2114) of being sutured at different portions of such a cross-section. Regarding claims 7-8, Duran appears to favor respective ratios of about 0.75 (Figure 4; column 6, lines 31-59), but proportions “can be varied” (column 6, lines 31-32), and ratios of 0.8 or more would have been obvious to one of ordinary skill in the art under routine experimentation and/or analysis in order to accommodate patients of varying anatomies and physiologies (column 4, lines 5-7; column 6, lines 43-45 and 57-59). Conclusion The prior art made of record and not relied upon is considered pertinent to Applicant’s disclosure: US 5,607,471: elastomeric material 7 (Figure 5); Figures 6-10; US 2011/0166644 A1: drawings. Any inquiry concerning this communication or earlier communications from the examiner should be directed to David H. Willse, whose telephone number is 571-272-4762. The examiner can normally be reached on Monday through Thursday. If attempts to reach the examiner by telephone are unsuccessful, the examiner’s supervisor Thomas Barrett can be reached at telephone number 571-272-4746. 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://portal.uspto.gov/external/portal. Should you have questions about access to the Private PAIR system, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). 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. /DAVID H WILLSE/ Primary Examiner, Art Unit 3774
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Prosecution Timeline

Jul 14, 2023
Application Filed
Feb 07, 2026
Non-Final Rejection — §102, §103 (current)

Precedent Cases

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Patent 12502288
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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
68%
Grant Probability
80%
With Interview (+12.9%)
3y 11m
Median Time to Grant
Low
PTA Risk
Based on 575 resolved cases by this examiner. Grant probability derived from career allow rate.

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