Prosecution Insights
Last updated: April 19, 2026
Application No. 18/400,252

PROSTHETIC HEART VALVES

Non-Final OA §102§103
Filed
Dec 29, 2023
Examiner
GANESAN, SUBA
Art Unit
3774
Tech Center
3700 — Mechanical Engineering & Manufacturing
Assignee
Cormatrix Cardiovascular Inc.
OA Round
1 (Non-Final)
74%
Grant Probability
Favorable
1-2
OA Rounds
3y 2m
To Grant
88%
With Interview

Examiner Intelligence

Grants 74% — above average
74%
Career Allow Rate
491 granted / 667 resolved
+3.6% vs TC avg
Moderate +14% lift
Without
With
+14.0%
Interview Lift
resolved cases with interview
Typical timeline
3y 2m
Avg Prosecution
30 currently pending
Career history
697
Total Applications
across all art units

Statute-Specific Performance

§101
0.6%
-39.4% vs TC avg
§103
45.5%
+5.5% vs TC avg
§102
26.6%
-13.4% vs TC avg
§112
19.3%
-20.7% vs TC avg
Black line = Tech Center average estimate • Based on career data from 667 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 . Priority Applicant’s claim for the benefit of a prior-filed application under 35 U.S.C. 119(e) or under 35 U.S.C. 120, 121, 365(c), or 386(c) is acknowledged. Applicant has not complied with one or more conditions for receiving the benefit of an earlier filing date under 35 U.S.C. 119(e) and 120 as follows: The later-filed application must be an application for a patent for an invention which is also disclosed in the prior application (the parent or original nonprovisional application or provisional application). The disclosure of the invention in the parent application and in the later-filed application must be sufficient to comply with the requirements of 35 U.S.C. 112(a) or the first paragraph of pre-AIA 35 U.S.C. 112, except for the best mode requirement. See Transco Products, Inc. v. Performance Contracting, Inc., 38 F.3d 551, 32 USPQ2d 1077 (Fed. Cir. 1994). The disclosure of the prior-filed application, Application No. 61/819232, 14229854, 14960354 fails to provide adequate support or enablement in the manner provided by 35 U.S.C. 112(a) or pre-AIA 35 U.S.C. 112, first paragraph for one or more claims of this application. Application 14229854 does not provide support for a prosthetic heart valve comprising: a continuous tubular shaped valve member comprising crosslinked, acellular pericardium tissue, said tubular shaped valve member further comprising a lumen, an outer wall, a longitudinal axis, an inlet portion, and an outlet portion, said outlet portion comprising a top edge, wherein said top edge is disposed proximate said inlet portion said outlet portion defining an outlet in fluid communication with said lumen of said tubular shaped valve member, said inlet portion defining an inlet in fluid communication with said lumen of said tubular shaped valve member. The earliest effective filing date for claims 1-9 is 7/11/2016. 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 1-4 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Cunanan et al. (Pub. No.: US 2012/0059487) Cunanan et al. (hereinafter, Cunanan) discloses a prosthetic heart valve (abstract) comprising: a continuous tubular shaped valve member (e.g., fig. 11) comprising crosslinked (para. 7), acellular (para. 7) pericardium (para. 39-40) tissue (abstract), said tubular shaped valve member further comprising a lumen (fig. 11), an outer wall (fig. 11), a longitudinal axis, an inlet portion (fig. 11, bottom of figure), and an outlet portion (fig. 11, bottom of figure), said outlet portion comprising a top edge, wherein said top edge is disposed proximate said inlet portion (the portions can be arbitrarily assigned such that the top edge is disposed proximate the inlet) said outlet portion defining an outlet in fluid communication with said lumen of said tubular shaped valve member (fig. 11, top of figure), said inlet portion defining an inlet in fluid communication with said lumen of said tubular shaped valve member (fig. 11). For claim 2, Cunanan discloses the prosthetic heart valve of claim 1, wherein said continuous tubular shaped valve member further comprises a supplemental support structure (fig. 11). For claim 3, Cunanan discloses the prosthetic heart valve of claim 1, wherein said crosslinked, acellular pericardium tissue comprises a tensile strength in the range of 9 MPa to 12 MPa (fig. 7, neonatal bovine pericardium). For claim 4, Cunanan discloses the prosthetic heart valve of claim 1, wherein said crosslinked, acellular pericardium tissue comprises crosslinked, acellular bovine pericardium tissue (para. 39-40). 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 5-9 are rejected under 35 U.S.C. 103 as being unpatentable over Cunanan et al. (Pub. No.: US 2012/0059487) in view of Sung et al. (Pub. No.: US 2005/0124560). For claim 5-7, Cunanan lacks a pharmacological agent selected from the group consisting of desoximetasone, sirolimus, cyclosporine and prednisolone, or selected from the group consisting of 57atorvastatin, cerivastatin, fluvastatin and lovastatin. Sung teaches crosslinked acellular bovine pericardium (para. 17) suitable for implantation (abstract) including a pharmacological agent selected from the group consisting of desoximetasone, sirolimus, cyclosporine and prednisolone (para. 241), or selected from the group consisting of atorvastatin, cerivastatin, fluvastatin and lovastatin (para. 241). It would have been obvious to one of ordinary skill in the art at the time the invention was filed to have provided the Cunanan pericardial prosthesis with pharmacologic agents including sirolimus and lovastatin as taught by Sung for the purpose of providing therapeutic treatment with the implantable material. This modification would have occurred using known methods and would have yielded predictable results. For claim 8, Cunanan lacks said crosslinked, acellular pericardium tissue comprises a growth factor selected from the group consisting of fibroblast growth factor-2 (FGF-2), transforming growth factor beta (TGF-(3) and vascular endothelial growth factor (VEGF). Sung teaches including VEGF in order to promote angiogenesis (para. 240). It would have been obvious to one of ordinary skill in the art at the time the invention was filed to have provided the Cunanan pericardial prosthesis with growth factors as taught by Sung in order to promote angiogenesis. This modification would have occurred using known methods and would have yielded predictable results. For claim 9, Cunanan lacks said crosslinked, acellular pericardium tissue is derived from pericardium tissue devoid of xenogeneic antigens. Sung teaches peicardial tissue which is acellular, including the process of cell extraction that removes lipid membranes and membrane associated antigens (para. 7). It would have been obvious to provide the pericardial tissue of Cunanan as devoid of xenogenic antigens as taught by Sung for the purpose of reducing the antigenic response to xenograft material. This modification would have occurred using known methods and would have yielded predictable results. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to SUBA GANESAN whose telephone number is (571)272-3243. The examiner can normally be reached Monday-Friday, 8 AM - 5 PM Mountain Time. 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, Jerrah Edwards can be reached at (408) 918-7557. 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. /SUBA GANESAN/Primary Examiner, Art Unit 3774
Read full office action

Prosecution Timeline

Dec 29, 2023
Application Filed
Jan 09, 2026
Non-Final Rejection — §102, §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12594160
PROSTHETIC HEART VALVE
2y 5m to grant Granted Apr 07, 2026
Patent 12588988
IMPLANT DELIVERY
2y 5m to grant Granted Mar 31, 2026
Patent 12588989
IMPLANT DELIVERY
2y 5m to grant Granted Mar 31, 2026
Patent 12582520
IMPLANT DELIVERY
2y 5m to grant Granted Mar 24, 2026
Patent 12575928
Devices, Systems, and Methods for an Implantable Heart-Valve Adapter
2y 5m to grant Granted Mar 17, 2026
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
74%
Grant Probability
88%
With Interview (+14.0%)
3y 2m
Median Time to Grant
Low
PTA Risk
Based on 667 resolved cases by this examiner. Grant probability derived from career allow rate.

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