Prosecution Insights
Last updated: April 19, 2026
Application No. 18/321,670

DEVICES AND METHODS FOR THE TREATMENT OF HEART FAILURE

Non-Final OA §102§112§DP
Filed
May 22, 2023
Examiner
STEWART, ALVIN J
Art Unit
3799
Tech Center
3700 — Mechanical Engineering & Manufacturing
Assignee
Corvia Medical Inc.
OA Round
1 (Non-Final)
83%
Grant Probability
Favorable
1-2
OA Rounds
3y 0m
To Grant
84%
With Interview

Examiner Intelligence

Grants 83% — above average
83%
Career Allow Rate
894 granted / 1082 resolved
+12.6% vs TC avg
Minimal +1% lift
Without
With
+1.2%
Interview Lift
resolved cases with interview
Typical timeline
3y 0m
Avg Prosecution
39 currently pending
Career history
1121
Total Applications
across all art units

Statute-Specific Performance

§101
1.3%
-38.7% vs TC avg
§103
34.3%
-5.7% vs TC avg
§102
39.0%
-1.0% vs TC avg
§112
13.9%
-26.1% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1082 resolved cases

Office Action

§102 §112 §DP
DETAILED ACTION Notice of Pre-AIA or AIA Status The present application is being examined under the pre-AIA first to invent provisions. Claim Rejections - 35 USC § 112 The following is a quotation of 35 U.S.C. 112(b): (b) CONCLUSION.—The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the inventor or a joint inventor regards as the invention. The following is a quotation of 35 U.S.C. 112 (pre-AIA ), second paragraph: The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the applicant regards as his invention. Claim 4 is rejected under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), second paragraph, as being indefinite for failing to particularly point out and distinctly claim the subject matter which the inventor or a joint inventor (or for applications subject to pre-AIA 35 U.S.C. 112, the applicant), regards as the invention. The word “structure” makes the claim indefinite. The Examiner is not clear what does the Applicant’s representative means with the word “structure”. The word “structural” is so broad that it seems like the claim is incomplete because it is omitting essential structural cooperative relationship of elements, such omission amounting to a gap between the necessary structural connections of the device. Correction is required. Claim Objections Claims 4, 7 and 8 are objected to because of the following informalities: the words: “structure”, “mesh” and “Nitinol mesh” should be preceded by the letter: ---a---. For example: “a structure”, “a mesh”, “a Nitinol mesh”. Appropriate correction is required. 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 pre-AIA 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 – (b) the invention was patented or described in a printed publication in this or a foreign country or in public use or on sale in this country, more than one year prior to the date of application for patent in the United States. Claims 2-10 are rejected under pre-AIA 35 U.S.C. 102(b) as being anticipated by Bailey et al US Patent 6,458,153B1. NOTE: The phrase “configured to” has been identified as an intended use limitation because is typical of claim limitations which may not distinguish over prior art according to the principle. It has been held that the recitation that an element is “configured to” performing a function is not a positive limitation but only requires the ability to so perform. Additionally, the claims also disclose functional limitations that has been examined but have not been given patentable weight. These expressions relating the apparatus to contents thereof during an intended operation are of no significance in determining patentability of the apparatus claim. Ex parte Thibault, 164 USPQ 666, 667 (Bd. App. 1969). Bailey et al discloses a device (50, see Figs. 13-17) comprising a body (12) adapted and configured to self-expand from a radially collapsed configuration to an expanded configuration. The device (12) comprising a first flange (56). A second flange (58), and a central portion (20) extending between the first and second flanges. The first and second flanges (56 & 58) each having diameters that gradually increase with distance from the central portion (See Fig. 16). The body (12) is capable of being delivered percutaneously to a patient's heart. The body (12) is also capable of being inserted in an opening in a septum of the heart to dispose the first flange (56) in the left atrium, the second flange (58) in the right atrium. Additionally, the central portion (20) is capable of permit blood to flow through the body from the left atrium to the right atrium. Regarding claim 3, see Fig. 16 showing the leaflets (26). Regarding claim 4, the Examiner interpreted the “structure” as element (11b). Regarding claim 5, it is inherent that heart valve implants are biased to a closed position, in this reference elements (24) create the biased position. Regarding claim 6, the Bailey et al reference is capable of having a pressure differential higher than 2 mm Hg, since, the natural occurring heart valves of an adult open at a higher pressure of 2 mm Hg. Therefore, it is inherent to design a prosthetic heart valve that open at those pressure differentials. Regarding claim 7, the broadest meaning in the Merriam-Webster dictionary is: ---a weblike pattern---. Therefore, see Fig. 13 disclosing the weblike structure. Regarding claim 8, see col. 8, lines 33-35. Regarding claim 9, the flanges are capable of being in contact with the septum when the body is in the expanded position. Regarding claim 10, the weblike pattern and diamond open cells shown in Fig. 13 makes the body being in the elongated configuration when the body is in the collapsed configuration. Double Patenting The nonstatutory double patenting rejection is based on a judicially created doctrine grounded in public policy (a policy reflected in the statute) so as to prevent the unjustified or improper timewise extension of the “right to exclude” granted by a patent and to prevent possible harassment by multiple assignees. A nonstatutory double patenting rejection is appropriate where the conflicting claims are not identical, but at least one examined application claim is not patentably distinct from the reference claim(s) because the examined application claim is either anticipated by, or would have been obvious over, the reference claim(s). See, e.g., In re Berg, 140 F.3d 1428, 46 USPQ2d 1226 (Fed. Cir. 1998); In re Goodman, 11 F.3d 1046, 29 USPQ2d 2010 (Fed. Cir. 1993); In re Longi, 759 F.2d 887, 225 USPQ 645 (Fed. Cir. 1985); In re Van Ornum, 686 F.2d 937, 214 USPQ 761 (CCPA 1982); In re Vogel, 422 F.2d 438, 164 USPQ 619 (CCPA 1970); In re Thorington, 418 F.2d 528, 163 USPQ 644 (CCPA 1969). A timely filed terminal disclaimer in compliance with 37 CFR 1.321(c) or 1.321(d) may be used to overcome an actual or provisional rejection based on nonstatutory double patenting provided the reference application or patent either is shown to be commonly owned with the examined application, or claims an invention made as a result of activities undertaken within the scope of a joint research agreement. See MPEP § 717.02 for applications subject to examination under the first inventor to file provisions of the AIA as explained in MPEP § 2159. See MPEP § 2146 et seq. for applications not subject to examination under the first inventor to file provisions of the AIA . A terminal disclaimer must be signed in compliance with 37 CFR 1.321(b). The filing of a terminal disclaimer by itself is not a complete reply to a nonstatutory double patenting (NSDP) rejection. A complete reply requires that the terminal disclaimer be accompanied by a reply requesting reconsideration of the prior Office action. Even where the NSDP rejection is provisional the reply must be complete. See MPEP § 804, subsection I.B.1. For a reply to a non-final Office action, see 37 CFR 1.111(a). For a reply to final Office action, see 37 CFR 1.113(c). A request for reconsideration while not provided for in 37 CFR 1.113(c) may be filed after final for consideration. See MPEP §§ 706.07(e) and 714.13. The USPTO Internet website contains terminal disclaimer forms which may be used. Please visit www.uspto.gov/patent/patents-forms. The actual filing date of the application in which the form is filed determines what form (e.g., PTO/SB/25, PTO/SB/26, PTO/AIA /25, or PTO/AIA /26) should be used. A web-based eTerminal Disclaimer may be filled out completely online using web-screens. An eTerminal Disclaimer that meets all requirements is auto-processed and approved immediately upon submission. For more information about eTerminal Disclaimers, refer to www.uspto.gov/patents/apply/applying-online/eterminal-disclaimer. Claim 1 is rejected on the ground of nonstatutory double patenting as being unpatentable over claim 1 of U.S. Patent No. 11,690,609B2. Although the claims at issue are not identical, they are not patentably distinct from each other because both cases disclose a device comprising a self-expandable body, the device comprising a first flange, a second flange, and a central portion extending between the first and second flanges. The first and second flanges each having diameters that gradually increase with distance from the central portion. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to ALVIN J STEWART whose telephone number is (571)272-4760. The examiner can normally be reached Monday-Friday 8:30AM-6PM 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, Thomas Barrett can be reached at 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 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. /ALVIN J STEWART/Primary Examiner, Art Unit 3799 1/8/26
Read full office action

Prosecution Timeline

May 22, 2023
Application Filed
Jan 08, 2026
Non-Final Rejection — §102, §112, §DP (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12599471
EXPANDABLE DEVICES AND ASSOCIATED SYSTEMS AND METHODS
2y 5m to grant Granted Apr 14, 2026
Patent 12599490
UNCAGING STENT
2y 5m to grant Granted Apr 14, 2026
Patent 12588997
HEART VALVE SEALING DEVICES AND DELIVERY DEVICES THEREFOR
2y 5m to grant Granted Mar 31, 2026
Patent 12588991
APPARATUS AND METHOD FOR MONITORING VALVE EXPANSION
2y 5m to grant Granted Mar 31, 2026
Patent 12588907
SELF-LOCKING WINCH
2y 5m to grant Granted Mar 31, 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
83%
Grant Probability
84%
With Interview (+1.2%)
3y 0m
Median Time to Grant
Low
PTA Risk
Based on 1082 resolved cases by this examiner. Grant probability derived from career allow rate.

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