Prosecution Insights
Last updated: August 16, 2026
Application No. 17/886,998

INFUSION PUMPS AND METHODS WITH SHAPE MEMORY WIRE DRIVEN SYRINGE MECHANISM

Non-Final OA §102§103
Filed
Aug 12, 2022
Priority
Aug 12, 2021 — provisional 63/232,300
Examiner
RITCHIE, HADEN MATTHEW
Art Unit
3783
Tech Center
3700 — Mechanical Engineering & Manufacturing
Assignee
Tandem Diabetes Care Inc.
OA Round
2 (Non-Final)
73%
Grant Probability
Favorable
2-3
OA Rounds
0m
Est. Remaining
99%
With Interview

Examiner Intelligence

Grants 73% — above average
73%
Career Allowance Rate
47 granted / 64 resolved
+3.4% vs TC avg
Strong +34% interview lift
Without
With
+33.8%
Interview Lift
resolved cases with interview
Typical timeline
3y 7m
Avg Prosecution
26 currently pending
Career history
98
Total Applications
across all art units

Statute-Specific Performance

§101
0.6%
-39.4% vs TC avg
§103
48.5%
+8.5% vs TC avg
§102
37.6%
-2.4% vs TC avg
§112
12.5%
-27.5% vs TC avg
Black line = Tech Center average estimate • Based on career data from 64 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. Claim(s) 1-6 and 11-16 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Lanier, JR. et al. (hereinafter “Lanier”, US 2017/0246383). Regarding claim 1, Lanier discloses a user-wearable infusion pump (Abstract, ¶[0031]-[0033]), comprising: a housing (Fig. 1, 102); a reservoir (Fig. 4, 118) configured to contain a medicament disposed in the housing (¶[0219]); a delivery mechanism (Fig. 3, 104) configured to deliver medicament from the reservoir to a user (¶[0217]); an actuation wire (Fig. 3, 112) configured to be energized to actuate the delivery mechanism to deliver medicament from the reservoir to a user (¶[0217]). Regarding claim 2, Lanier discloses the user-wearable infusion pump of claim 1, wherein the actuation wire defines two electrical paths that are separately energizable (¶[0219], where the actuation wire is not limited to a single pathway and multiple are expressed as a possible configuration for the device). Regarding claim 3, Lanier discloses the user-wearable infusion pump of claim 2, wherein the two electrical paths are configured to provide two different predetermined medicament dispense sizes with the delivery mechanism (¶[0375], [0382]-[0385], the device of Lanier is described as having at least one actuation wire and is expressed as having the capability for different doses that send and use different signals to produce the configured doses). Regarding claim 4, Lanier discloses the user-wearable infusion pump of claim 2, wherein each electrical path is defined by corresponding electrical contacts that are energized to actuate the delivery mechanism. Regarding claim 4, Lanier discloses the user-wearable infusion pump of claim 2, wherein the actuation wire is a single continuous wire (Fig. 3, 112). Regarding claim 6, Lanier discloses the user-wearable infusion pump of claim 1, wherein the actuation wire comprises a shape memory material such that energization of the actuation wire causes the actuation wire to shorten to actuate the delivery mechanism (¶[0217]). Regarding claim 11, Lanier discloses user-wearable infusion pump (Abstract, ¶[0031]-[0033]), comprising: a housing (Fig. 1, 102); a reservoir (Fig. 4, 118) configured to contain a medicament disposed in the housing (¶[0217]); and a delivery mechanism (Fig. 3, 104) configured to deliver medicament from the reservoir to a user, wherein the delivery mechanism is configured to provide two different predetermined medicament dispense sizes (¶[0217]). Regarding claim 12, Lanier discloses he user-wearable infusion pump of claim 11, further comprising an actuation wire (Fig. 3, 112) configured to be energized to actuate the delivery mechanism to deliver medicament from the reservoir to a user (¶[0217]). Regarding claim 13, The user-wearable infusion pump of claim 12, wherein the actuation wire defines two electrical paths corresponding to the two different predetermined medicament dispense sizes (¶[0375], [0382]-[0385], the device of Lanier is described as having at least one actuation wire and is expressed as having the capability for different doses that send and use different signals to produce the configured doses). Regarding claim 14, The user-wearable infusion pump of claim 13, wherein each electrical path is defined by corresponding electrical contacts that are energized to actuate the delivery mechanism. Regarding claim 15, Lanier discloses the user-wearable infusion pump of claim 12, wherein the actuation wire is a single continuous wire (Fig. 3, 112). Regarding claim 16, Lanier discloses the user-wearable infusion pump of claim 12, wherein the actuation wire comprises a shape memory material such that energization of the actuation wire causes the actuation wire to shorten to actuate the delivery mechanism (¶[0217]). 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) 7-10 and 17-20 are rejected under 35 U.S.C. 103 as being unpatentable over Lanier, JR. et al. (hereinafter “Lanier”, US 2017/0246383) in view of Menroe (US 2007/0276329). Regarding claim 7, Lanier discloses the user-wearable infusion pump of claim 1, Lanier does not specifically teach wherein the delivery mechanism comprises a drive gear configured to be rotated to actuate the delivery mechanism. Menroe teaches a disposable dispensing device with a driving mechanism for fluid delivery. Menroe teaches wherein the delivery mechanism comprises a drive gear configured to be rotated to actuate the delivery mechanism (¶[0143]). By modifying the device of Lanier to use a driving gear mechanism to drive the actuation and the delivery of the medicine, it would allow for more accurate dosing and reduce the risk of malfunction which can include overdosing (¶[0144] from Menroe). Therefore it would have been obvious to one of ordinary skill in the art prior to the effective filing date of the claimed invention to modify the device of Lanier to use a gear driving mechanism (¶[0143] from Menroe). Regarding claim 8, the combined device of Lanier and Menroe teaches the user-wearable infusion pump of claim 7, Menroe further teaches wherein the delivery mechanism further comprises a frame disposed around the drive gear (Fig. 5d, 72), the frame including a flexible member having a drive tooth configured to interface with the drive gear to rotate the drive gear (Fig. 5a, 40). Regarding claim 9, the combined device of Lanier and Menroe teaches the user-wearable infusion pump of claim 8, Menroe further teaches wherein the actuation wire is configured to pull the flexible member down to causes the drive tooth to rotate the drive gear a predetermined amount (¶[0153], where the wire 186 pulls on the plate to cause the actuation of the driving mechanism to occur). Regarding claim 10, the combined device of Lanier and Menroe teaches the user-wearable infusion pump of claim 7, Menroe further teaches wherein the delivery mechanism further includes an encoder having a plurality of teeth that is rotated when the drive gear rotates to track accuracy of medicament delivery (¶[0144], where the purpose of the gear and wheel during mechanism is to have a reliable way to track dosing and have accurate dosing measurements for delivery). Regarding claim 17, Lanier discloses the user-wearable infusion pump of claim 11, Lanier does not specifically teach wherein the delivery mechanism comprises a drive gear configured to be rotated to actuate the delivery mechanism. Menroe teaches a disposable dispensing device with a driving mechanism for fluid delivery. Menroe teaches wherein the delivery mechanism comprises a drive gear configured to be rotated to actuate the delivery mechanism (¶[0143]). By modifying the device of Lanier to use a driving gear mechanism to drive the actuation and the delivery of the medicine it would allow for more accurate dosing and reduce the risk of malfunction which can include overdosing (¶[0144] from Menroe). Therefore it would have been obvious to one of ordinary skill in the art prior to the effective filing date of the claimed invention to modify the device of Lanier to use a gear driving mechanism (¶[0143] from Menroe). Regarding claim 18, the combined device of Lanier and Menroe teaches the user-wearable infusion pump of claim 17, Menroe further teaches wherein the delivery mechanism further comprises a frame disposed around the drive gear (Fig. 5d, 72), the frame including a flexible member having a drive tooth configured to interface with the drive gear to rotate the drive gear (Fig. 5a, 40). Regarding claim 19, the combined device of Lanier and Menroe teaches the user-wearable infusion pump of claim 18, Menroe further teaches wherein the actuation wire is configured to pull the flexible member down to causes the drive tooth to rotate the drive gear a predetermined amount (¶[0153], where the wire 186 pulls on the plate to cause the actuation of the driving mechanism to occur). Regarding claim 20, the combined device of Lanier and Menroe teaches the user-wearable infusion pump of claim 17, Menroe further teaches wherein the delivery mechanism further includes an encoder having a plurality of teeth that is rotated when the drive gear rotates to track accuracy of medicament delivery (¶[0144], where the purpose of the gear and wheel during mechanism is to have a reliable way to track dosing and have accurate dosing measurements for delivery). Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to HADEN M RITCHIE whose telephone number is (703)756-1699. The examiner can normally be reached M-F 8am-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, Bhisma Mehta can be reached at 571-272-3383. 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. /HADEN MATTHEW RITCHIE/Examiner, Art Unit 3783 /BHISMA MEHTA/Supervisory Patent Examiner, Art Unit 3783
Read full office action

Prosecution Timeline

Aug 12, 2022
Application Filed
Dec 23, 2025
Non-Final Rejection mailed — §102, §103
Mar 17, 2026
Response Filed
Aug 14, 2026
Non-Final Rejection mailed — §102, §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
73%
Grant Probability
99%
With Interview (+33.8%)
3y 7m (~0m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 64 resolved cases by this examiner. Grant probability derived from career allowance rate.

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