Prosecution Insights
Last updated: July 17, 2026
Application No. 18/125,520

Live Angiography Registration

Non-Final OA §103
Filed
Mar 23, 2023
Priority
Mar 24, 2022 — provisional 63/323,335 +1 more
Examiner
LU, ZHIYU
Art Unit
2665
Tech Center
2600 — Communications
Assignee
LightLab Imaging Inc.
OA Round
3 (Non-Final)
49%
Grant Probability
Moderate
3-4
OA Rounds
6m
Est. Remaining
63%
With Interview

Examiner Intelligence

Grants 49% of resolved cases
49%
Career Allowance Rate
380 granted / 772 resolved
-12.8% vs TC avg
Moderate +14% lift
Without
With
+14.0%
Interview Lift
resolved cases with interview
Typical timeline
3y 10m
Avg Prosecution
51 currently pending
Career history
827
Total Applications
across all art units

Statute-Specific Performance

§101
0.4%
-39.6% vs TC avg
§103
95.4%
+55.4% vs TC avg
§102
2.4%
-37.6% vs TC avg
§112
1.5%
-38.5% vs TC avg
Black line = Tech Center average estimate • Based on career data from 772 resolved cases

Office Action

§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 . 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and the fee set forth in 37 CFR 1.17(e) has been timely paid, the finality of the previous Office action has been withdrawn pursuant to 37 CFR 1.114.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 03/02/2026 has been entered. Response to Arguments Applicant’s arguments with respect to claim(s) 1-20 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. 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) 1, 6 ,8-11, 16, 18-20 is/are rejected under 35 U.S.C. 103 as being unpatentable over Hamerslag (US2020/0029924) in view of Mine (US2008/0193004). To claim 1, Hamerslag teach a method, comprising: accessing, using one or more processors, a live imaging feed of a blood vessel (Fig. 2; paragraphs 0034, 0038, 0041, live fluoroscopic imaging data 26, intrabody angiographic imaging data 28); receiving, using the one or more processors, a reference image of the blood vessel (Fig. 2; paragraph 0035, vessel map 14; paragraph 0044, angiographic vessel mask image 40, fluoroscopic mask image 42); aligning, using the one or more processors, the live imaging feed and the reference image such that objects represented in a field of view of the reference image correspond to objects represented in a field of view of the live imaging feed (paragraphs 0008, 0016, 0035-0036, 0050, 0060, correspondingly pans the vessel map 14 and overlays the live fluoroscopic imaging 26; paragraphs 0045-0046, correspond the angiographic vessel mask image 40 from the angiographic vessel imaging 28, correspond the fluoroscopic mask image 42 from the live fluoroscopic image 26); receiving user input associated with the reference image; adjusting, using the one or more processors, the field of view of the reference image based on the user input (paragraphs 0008, 0012, 0017, 0033, 0051, 0054, 0056, user’s entries through the user interface cause field of view changes to be carried out); and automatically adjusting, using the one or more processors, the field of view of the live imaging feed based on the user input to the reference image (paragraphs 0036-0037, display capable of presenting a combination of live fluoroscopic image 26 and vessel map 14, user interface 114, in embodiments, to allow a clinician to control a field of view of the image acquisition machine 30. In particular, a field of view size and iso-center position is able to be changed through the user interface 114; paragraph 0042, the vessel roadmap 14 pans automatically; paragraph 0064, adapted to operate automatically and/or to execute the orders of a user). But, Hamerslag teach the live imaging feed is simultaneously displayed with respect to the reference image; user input indicating a change in field of view for the reference image; automatically adjusting the field of view of the live imaging feed that is simultaneously displayed with respect to the reference image. Mine teach an image acquisition system simultaneously displaying reference image and live image (S13 of Fig. 5A; paragraph 0048), manually inputting indication a change in field of view for the reference image (S14 of Fig. 5A; paragraphs 0036, 0042, set a region of interest, etc.), and automatically adjusting the field of view of the live imaging feed that is simultaneously displayed with respect to the reference image (paragraphs 0048, 0060, claim 9 on page 5; displays the reference image and the live image in synchronism with each other so as to match temporal information or spatial information therebetween; matching an observation angle, magnification, positional relationship, temporal information, and the like between the reference image and the live image and the processing of matching a luminance, dynamic range, and image filter between the reference image and the live image). Therefore, it would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to incorporate teaching of Mine into the method of Hamerslag, in order to implement synchronism for imaging comparison. To claim 6, Hamerslag and Mine teach claim 1. Hamerslag teach wherein object includes at least a portion of a blood vessel (abstract). To claim 8, Hamerslag and Mine teach claim 1. Hamerslag teach wherein the reference image comprises a still extraluminal image co-registered with intravascular data, wherein the intravascular data is derived from an intravascular device that collects data using at least one of optical coherence tomography (OCT), intravascular ultrasound, near-infrared spectroscopy, or micro-OCT (paragraph 0044, angiographic vessel mask image 40, fluoroscopic mask image 42). To claim 9, Hamerslag and Mine teach claim 1. Hamerslag teach wherein the reference image further comprises a surgical guide overlay (abstract, paragraph 0016). To claim 11, Hamerslag and Mine teach a system (Figs. 1-2; as explained in response to claim 1 above). To claim 16, Hamerslag and Mine teach claim 11. Hamerslag teach wherein object includes at least a portion of a blood vessel (abstract). To claim 18, Hamerslag and Mine teach claim 11. Hamerslag teach wherein the reference image comprises a still extraluminal image co-registered with intravascular data, wherein the intravascular data is derived from an intravascular device that collects data using at least one of optical coherence tomography (OCT), intravascular ultrasound, near-infrared spectroscopy, or micro-OCT (paragraph 0044, angiographic vessel mask image 40, fluoroscopic mask image 42). To claim 19, Hamerslag and Mine teach claim 11. Hamerslag teach wherein the reference image further comprises a surgical guide overlay (abstract, paragraph 0016). To claims 10 and 20, Hamerslag and Mine teach claims 1 and 11. Hamerslag and Mine teach wherein the adjusting the reference image and the live imaging feed, the user input comprises simultaneously panning the live imaging feed and the reference image (Mine, paragraph 0048, observation angle, positional relationship). Claim(s) 2, 7, 12, 17 is/are rejected under 35 U.S.C. 103 as being unpatentable over Hamerslag (US2020/0029924) in view of Mine (US2008/0193004) and Anderson et al. (US10751015). To claims 2 and 12, Hamerslag and Mine teach claims 1 and 11. Hamerslag and Mine teach wherein the user input comprises a selected zoom level (Mine, paragraph 0048, magnification, obvious by operator input). Anderson teach user input comprises a selected zoom level (618, 620 of Fig. 6; column 14 lines 20-30), which would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to incorporate into the method and system of Hamerslag and Mine, in order to provide zoom control. To claims 7 and 17, Hamerslag and Mine teach claims 1 and 11. Hamerslag and Mine teach wherein the live imaging feed comprises an intravascular image derived from an imaging system based on angiography, fluoroscopy, x-ray, nuclear magnetic resonance, or computer aided tomography (Hamerslag, abstract). Anderson teach the live imaging feed comprises an intravascular image derived from an imaging system based on angiography, fluoroscopy, x-ray, nuclear magnetic resonance, or computer aided tomography (column 2 lines 23-41, column 22 lines 20-41), which would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to incorporate into the method of Hamerslag and Mine, in order to expand imaging area. Claim(s) 3-5, 13-15 is/are rejected under 35 U.S.C. 103 as being unpatentable over Hamerslag (US2020/0029924) in view of Mine (US2008/0193004), Anderson et al. (US10751015) and Cohen et al. (US11197651). To claims 3 and 13, Hamerslag, Mine and Anderson teach claims 2 and 12. Hamerslag, Mine and Anderson teach wherein aligning the live imaging feed and the reference image further comprises: identifying, using one or more processors, an area of interest on the reference image (Hamerslag, paragraphs 0051-0054; Anderson, abstract); calculating, using one or more processors, a scale factor based on a size of the objects represented in the field of view of the reference image and a size of the objects represented in the field of view of the live imaging feed (Anderson, column 14 lines 20-30), but do not expressly disclose wherein the fields of view are associated with a grid; identifying, using one or more processors, a point of origin of the grid associated with the live imaging feed; transposing, using one or more processors, the point of origin onto the reference image; calculating, using one or more processors, a distance coordinate based on the distance between the area of interest and the transposed point of origin; and converting, using one or more processors, coordinates of the area of interest to match coordinates of the live imaging feed, based on the scale factor and the distance coordinate. Cohen teach the fields of view are associated with a grid; identifying, using one or more processors, a point of origin of the grid associated with the live imaging feed; transposing, using one or more processors, the point of origin onto the reference image; calculating, using one or more processors, a distance coordinate based on the distance between the area of interest and the transposed point of origin; and converting, using one or more processors, coordinates of the area of interest to match coordinates of the live imaging feed, based on the scale factor and the distance coordinate (abstract, column 49 lines 53-56, column 65 lines 11-29), which would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention of Hamerslag, Mine and Anderson, in order to further presentation feature. To claims 4 and 14, Hamerslag, Mine, Anderson and Cohen teach claims 3 and 13. Hamerslag, Mine, Anderson and Cohen teach wherein the scale factor is based on the selected zoom level and is calculated as a ratio of a zoomed reference image and a non-zoomed reference image (Cohen, column 65 lines 11-29; specific implementation of scale factor is well-known in the art which would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to incorporate by design preference, hence Official Notice is taken). . To claims 5 and 15, Hamerslag, Mine, Anderson and Cohen teach claims 3 and 13. Hamerslag, Mine, Anderson and Cohen teach further comprising simultaneously displaying, using one or more processors, the converted area of interest on the reference image based on the converted coordinates and the live imaging feed (Cohen, column 52 lines 51-67, simultaneously adjustment would be obvious since user control is with respect to a live imaging feed). Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to ZHIYU LU whose telephone number is (571)272-2837. The examiner can normally be reached Weekdays: 8:30AM - 5:00PM. 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, Stephen R Koziol can be reached at (408) 918-7630. 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. ZHIYU . LU Primary Examiner Art Unit 2669 /ZHIYU LU/Primary Examiner, Art Unit 2665 April 1, 2026
Read full office action

Prosecution Timeline

Mar 23, 2023
Application Filed
May 02, 2025
Non-Final Rejection mailed — §103
Aug 04, 2025
Response Filed
Dec 02, 2025
Final Rejection mailed — §103
Mar 02, 2026
Request for Continued Examination
Mar 05, 2026
Response after Non-Final Action
Apr 03, 2026
Non-Final Rejection mailed — §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12682418
HIGH RESOLUTION HUMAN IMAGING USING NEURAL NETWORK
1y 6m to grant Granted Jul 14, 2026
Patent 12675982
VIDEO PROCESSING METHOD USING TRANSFER LEARNING AND PRE-TRAINING SERVER
2y 9m to grant Granted Jul 07, 2026
Patent 12670554
CONDITIONAL KERNEL PREDICTION NETWORK AND ADAPTIVE DEPTH PREDICTION FOR IMAGE AND VIDEO PROCESSING
4y 9m to grant Granted Jun 30, 2026
Patent 12670586
METHOD AND SYSTEM FOR RULE BASED DISPLAY OF SETS OF IMAGES USING IMAGE CONTENT DERIVED PARAMETERS
3y 1m to grant Granted Jun 30, 2026
Patent 12670717
Device and Method for Identifying Relationships Between Individuals in a Crowd
2y 6m to grant Granted Jun 30, 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
49%
Grant Probability
63%
With Interview (+14.0%)
3y 10m (~6m remaining)
Median Time to Grant
High
PTA Risk
Based on 772 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