Prosecution Insights
Last updated: July 17, 2026
Application No. 18/715,781

PHOTOACOUSTIC MONITORING OF ANGIOGENESIS FOR PREDICTING RESPONSE TO THERAPY IN HEALING WOUNDS

Non-Final OA §102§112
Filed
Jun 03, 2024
Priority
Dec 16, 2021 — provisional 63/290,178 +2 more
Examiner
FERNANDEZ, KATHERINE L
Art Unit
3798
Tech Center
3700 — Mechanical Engineering & Manufacturing
Assignee
The Regents of the University of California
OA Round
3 (Non-Final)
58%
Grant Probability
Moderate
3-4
OA Rounds
2y 2m
Est. Remaining
96%
With Interview

Examiner Intelligence

Grants 58% of resolved cases
58%
Career Allowance Rate
452 granted / 782 resolved
-12.2% vs TC avg
Strong +38% interview lift
Without
With
+38.0%
Interview Lift
resolved cases with interview
Typical timeline
4y 3m
Avg Prosecution
47 currently pending
Career history
839
Total Applications
across all art units

Statute-Specific Performance

§101
2.6%
-37.4% vs TC avg
§103
71.3%
+31.3% vs TC avg
§102
4.5%
-35.5% vs TC avg
§112
8.9%
-31.1% vs TC avg
Black line = Tech Center average estimate • Based on career data from 782 resolved cases

Office Action

§102 §112
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 . Continued Examination Under 37 CFR 1.114 A request for continued examination under 37 CFR 1.114, including the fee set forth in 37 CFR 1.17(e), was filed in this application after final rejection. Since this application is eligible for continued examination under 37 CFR 1.114, and the fee set forth in 37 CFR 1.17(e) has been timely paid, the finality of the previous Office action has been withdrawn pursuant to 37 CFR 1.114. Applicant's submission filed on May 22, 2026 has been entered. Claim Objections Claim 14 is objected to because of the following informalities: In claim 14, in line 1, --- modality --- should be inserted after “treatment”. Appropriate correction is required. 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 15-17 are 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. Claim 15 recites the limitation "the extracted information" in line 1. There is insufficient antecedent basis for this limitation in the claim. 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 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) 13-26 is/are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Mantri et al. (“Photoacoustic monitoring of angiogenesis predicts response to therapy in healing wounds”, October 17, 2021), as cited by Applicant. With regards to claim 13, Mantri et al. disclose a method for treating a wound comprising: obtaining a photoacoustic ultrasound image of a wound on a patient (pg. 4, Section “Photoacoustic-Ultrasound Imaging”, referring to use of LED-based photoacoustic imaging system to acquire images of a wound surface/region); processing the photoacoustic ultrasound image to calculate a temporal rate of change in at least one of hemoglobin concentration, oxygen saturation, or photoacoustic intensity over multiple time points (pgs. 4-5, Sections “Image Processing” and “Statistics”, referring to processing the images to obtain changes in PA intensity and referring to plotting the rate of PA change per day vs. the healing time; pg. 6, Section “Results”, referring to measuring changes in PA intensity over time; Figures 1-4, which depict photoacoustic (PA) intensity changes over multiple time points (i.e. “Time (days)”); determining a degree of wound healing based at least in part on the calculated temporal rate of change (Abstract, referring to the use of PA-US to monitor angiogenesis and stratify patients “responding vs. non-responding” to therapy (i.e. degree of wound healing), wherein patients responding to therapy showed clear signs of angiogenesis and an increased rate of PA increase, wherein rate of PA increase and hence the rate of angiogenesis was able to predict healing times within 30 days from the start of monitoring; pg. 11, 2nd paragraph, referring to rate of PA change being indicative of the rate of angiogenesis in the wound bed, wherein responding patients had a mean rate of PA change intensity that was significantly higher than non-responders; pg. 14, Section “Conclusions”, referring to an increase in PA intensity correlates with wound closure due to the formation of new blood vessels and non-healing wounds showed no correlation between PA intensity and wound area); and selecting, modifying, or controlling a treatment modality based on the determined degree of wound healing (pg. 12, first paragraph, referring to PA classification of patients according to their response (i.e. healing/non-responding which are degrees of wound healing) would allow specialists to change their course of treatment if the wound is not responding to conventional treatment protocols; pg. 12, last paragraph, referring to patients not responding to therapy can be more efficiently directed to other wound treatment interventions or therapeutic modalities; pg. 3, last paragraph, referring to an early angiogenesis tool helping directing treatment protocols, which helps clinicians make early and better-informed decisions on whether a particular treatment regimen should be continued; Abstract, referring to the early response detection system helping inform management and treatment strategies while improving outcomes and reducing costs); and treating the wound based at least in part based on the selected, modified or controlled treatment modality (pg. 12, last paragraph, referring to patients not responding to therapy can be more efficiently directed to other wound treatment interventions or therapeutic modalities; pg. 3, last paragraph, referring to an early angiogenesis tool helping directing treatment protocols, which helps clinicians make early and better-informed decisions on whether a particular treatment regimen should be continued; Abstract, referring to the early response detection system helping inform management and treatment strategies while improving outcomes and reducing costs; pg. 12, first paragraph, referring to PA classification allowing wound specialists to change their course of treatment if the wound Is not responding to conventional treatment protocols). With regards to claim 14, Mantri et al. disclose that the treatment is selected from the group including skin grafts, debridement and hyperbaric therapy (pg. 3, last paragraph, pg. 12, last paragraph, referring to the treatment protocols including hyperbaric oxygen therapy, debridement, etc.). With regards to claim 15, Mantri et al. disclose that the extracted information is a measure of intensity of the photoacoustic ultrasound image (pgs. 4-5, Sections “Image Processing”, “Statistics”, referring to processing the images to obtain/extract photoacoustic intensity as a function of time; Figures 1-4). With regards to claim 16, Mantri et al. disclose that the measure of intensity is correlated with wound healing (pg. 7, referring to the caption for Figure 1, which sets forth “PA intensity increases linearly as the wound heals suggesting that angiogenesis is correlated to wound closure”; pg. 14, Section “Conclusions”, referring to an increase in PA intensity correlates with wound closure due to the formation of new blood vessels; Figures 1-4). With regards to claim 17, Mantri et al. disclose that the measure of intensity is a mean gray scale value of the photoacoustic ultrasound image (pg. 4, Sections “Photoacoustic-Ultrasound Imaging” and “Image Processing”, referring to the images being processed to obtain the photoacoustic intensity; Figures 1-3, wherein the photoacoustic ultrasound images are in gray scale, and thus the intensity values are gray scale values; pg. 7, caption under Figure 2 referring to the use of “mean US intensity”; pg. 11, 2nd paragraph, pg. 12, second paragraph, referring to the use of mean US intensity/mean rate of PA changes). With regards to claim 18, Mantri et al. disclose that the method further comprises monitoring the treatment over time by obtaining and processing additional photoacoustic ultrasound images at subsequent times (pg. 4, Sections “Photoacoustic -Ultrasound Imaging”, “Image Processing”, referring to obtaining images at 30 frames/s, wherein all frames were reconstructed and visualized and the ROIs were drawn for every frame). With regards to claim 19, Mantri et al. disclose that the method further comprises determining that the wound is healing if a measure of intensity of the photoacoustic ultrasound image extracted from the additional photoacoustic ultrasound images increases over time (pg. 14, first paragraph, referring to an increase in PA intensity correlates with wound closure due to the formation of new blood vessels; Figures 1-4). With regards to claim 20, Mantri et al. disclose that the method further comprises predicting if the wound is or is not responding to the treatment based on the monitoring (Abstract, referring to the use of PA-US to monitor angiogenesis and stratify patients “responding vs. non-responding” to therapy (i.e. degree of wound healing), wherein patients responding to therapy showed clear signs of angiogenesis and an increased rate of PA increase, wherein rate of PA increase and hence the rate of angiogenesis was able to predict healing times within 30 days from the start of monitoring; pg. 11, 2nd paragraph, referring to rate of PA change being indicative of the rate of angiogenesis in the wound bed, wherein responding patients had a mean rate of PA change intensity that was significantly higher than non-responders; pg. 14, Section “Conclusions”, referring to an increase in PA intensity correlates with wound closure due to the formation of new blood vessels and non-healing wounds showed no correlation between PA intensity and wound area; Figures 1-4). With regards to claim 21, Mantri et al. disclose that the predicting is performed within 30 days of initiation of the monitoring (pg. 14, first paragraph, referring to PA imaging being used to classify therapy responders and non-responders within 30-days from the start of treatment; Figure 1, see caption which refers to PA intensity over 1, 7 and 29 days and further the PA-intensity vs Time(days) graph depicts 30 days). With regards to claim 22, Mantri et al. disclose that the predicting further predicts a time needed for the wound to heal (pg. 14, first paragraph, referring to a higher rate of PA increase was associated with an exponential reduction in healing times; Figure 4, wherein photoacoustic imaging is used to predict wound healing and response to therapy, wherein the rate PA increase per day within the first 30 days is an effective imaging marker to predict wound healing time). With regards to claim 23, Mantri et al. disclose that the method further comprises predicting if the wound is or is not responding to treatment based on a change in a measure of intensity of the photoacoustic ultrasound image over time (Abstract, referring to the use of PA-US to monitor angiogenesis and stratify patients “responding vs. non-responding” to therapy (i.e. degree of wound healing), wherein patients responding to therapy showed clear signs of angiogenesis and an increased rate of PA increase, wherein rate of PA increase and hence the rate of angiogenesis was able to predict healing times within 30 days from the start of monitoring; pg. 11, 2nd paragraph, referring to rate of PA change being indicative of the rate of angiogenesis in the wound bed, wherein responding patients had a mean rate of PA change intensity that was significantly higher than non-responders; pg. 14, Section “Conclusions”, referring to an increase in PA intensity correlates with wound closure due to the formation of new blood vessels and non-healing wounds showed no correlation between PA intensity and wound area). With regards to claim 24, Mantri et al. disclose that the method further comprises predicting that the wound is responding to treatment if the measure of intensity indicates that the intensity is increasing over time (Abstract, referring to the use of PA-US to monitor angiogenesis and stratify patients “responding vs. non-responding” to therapy (i.e. degree of wound healing), wherein patients responding to therapy showed clear signs of angiogenesis and an increased rate of PA increase, wherein rate of PA increase and hence the rate of angiogenesis was able to predict healing times within 30 days from the start of monitoring; pg. 11, 2nd paragraph, referring to rate of PA change being indicative of the rate of angiogenesis in the wound bed, wherein responding patients had a mean rate of PA change intensity that was significantly higher than non-responders; pg. 14, Section “Conclusions”, referring to an increase in PA intensity correlates with wound closure due to the formation of new blood vessels and non-healing wounds showed no correlation between PA intensity and wound area). With regards to claim 25, Mantri et al. disclose that obtaining the photoacoustic ultrasound image of the wound on the patient includes performing a photoacoustic ultrasound scan of the wound (pg. 4, Section “Photoacoustic-Ultrasound Imaging”, referring to use of LED-based photoacoustic imaging system to acquire images/scans of a wound surface/region; Figures 1-4). With regards to claim 26, Mantri et al. disclose that the wound is of a type selected from the group including a decubitus ulcer, a diabetic ulcer and an insufficiency injury (pg. 3, last paragraph, referring to diabetic ulcers; pg. 8, Figure 3 caption, referring to stage III pressure ulcer (i.e. decubitus ulcer)). Response to Arguments Applicant’s arguments with respect to claim(s) 13-26 have been considered but are moot because the new ground of rejection does not rely on any reference applied in the prior rejection of record for any teaching or matter specifically challenged in the argument. Previously cited Mantri has been introduced to reject claims 13-26. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to KATHERINE L FERNANDEZ whose telephone number is (571)272-1957. The examiner can normally be reached Monday-Friday 9:00 AM - 5:30 PM (ET). 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, Pascal Bui-Pho can be reached at (571) 272-2714. 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. /KATHERINE L FERNANDEZ/Primary Examiner, Art Unit 3798
Read full office action

Prosecution Timeline

Jun 03, 2024
Application Filed
Oct 01, 2025
Non-Final Rejection mailed — §102, §112
Jan 21, 2026
Response Filed
Apr 14, 2026
Final Rejection mailed — §102, §112
May 22, 2026
Request for Continued Examination
May 26, 2026
Response after Non-Final Action
Jun 30, 2026
Non-Final Rejection mailed — §102, §112 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12672789
BIOLOGICAL CONDITION MEASUREMENT APPARATUS, BIOLOGICAL CONDITION MEASUREMENT METHOD AND BIOLOGICAL CONDITION MEASUREMENT SYSTEM
2y 8m to grant Granted Jul 07, 2026
Patent 12653492
Methods and Apparatus for Imaging with Conformable Ultrasound Patch
1y 7m to grant Granted Jun 16, 2026
Patent 12651391
SYSTEMS AND METHODS FOR OPTO-ACOUSTIC IMAGE RECONSTRUCTION WITH MULTIPLE ACQUISITIONS
4y 4m to grant Granted Jun 09, 2026
Patent 12648829
SYSTEMS AND METHODS FOR DISPLAYING INTRAOPERATIVE IMAGE DATA
3y 7m to grant Granted Jun 09, 2026
Patent 12648753
CONTROL OF LASER ATHERECTOMY BY CO-REGISTERD INTRAVASCULAR IMAGING
3y 5m to grant Granted Jun 09, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

Strategy Recommendation AI-generated — please review before filing

Get a prosecution strategy drawn from examiner precedents, rejection analysis, and claim mapping.
Typically takes 5-10 seconds — AI-generated, attorney review required before filing

Prosecution Projections

3-4
Expected OA Rounds
58%
Grant Probability
96%
With Interview (+38.0%)
4y 3m (~2y 2m remaining)
Median Time to Grant
High
PTA Risk
Based on 782 resolved cases by this examiner. Grant probability derived from career allowance rate.

Sign in with your work email

Enter your email to receive a magic link. No password needed.

Personal email addresses (Gmail, Yahoo, etc.) are not accepted.

Free tier: 3 strategy analyses per month