Prosecution Insights
Last updated: April 19, 2026
Application No. 17/972,008

PROCESS FOR THE PREPARATION OF SODIUM 4-(2-((1E,3E,5E,7Z)-7-(1,1-DIMETHYL-3-(4-SULFONATOBUTYL)-1H-BENZO[e]INDOL-2(3H)-YLIDENE) HEPTA-1,3,5-TRIENYL)-1,1-DIMETHYL-1H-BENZO[e]INDOLIUM-3-YL) BUTANE-1-SULFONATE (INDOCYANINE GREEN)

Final Rejection §102§103§112
Filed
Oct 24, 2022
Examiner
STOCKTON, LAURA LYNNE
Art Unit
1626
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
BIOPHORE INDIA PHARMACEUTICALS PVT. LTD.
OA Round
2 (Final)
75%
Grant Probability
Favorable
3-4
OA Rounds
2y 6m
To Grant
99%
With Interview

Examiner Intelligence

Grants 75% — above average
75%
Career Allow Rate
1009 granted / 1342 resolved
+15.2% vs TC avg
Strong +34% interview lift
Without
With
+33.7%
Interview Lift
resolved cases with interview
Typical timeline
2y 6m
Avg Prosecution
26 currently pending
Career history
1368
Total Applications
across all art units

Statute-Specific Performance

§101
1.2%
-38.8% vs TC avg
§103
21.1%
-18.9% vs TC avg
§102
22.1%
-17.9% vs TC avg
§112
34.6%
-5.4% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1342 resolved cases

Office Action

§102 §103 §112
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 . DETAILED ACTION Claims 1-7 are pending in the instant application. Election/Restrictions Applicant's election with traverse of Group I, PNG media_image1.png 366 610 media_image1.png Greyscale , in the reply filed on June 5, 2025 is acknowledged. The traversal is on the ground(s) that the claims of the instant application do not present a serious burden on the Examiner. This is not found persuasive because separate search considerations are involved for each of the groups identified in the Restriction Requirement of April 28, 2025. For example, various chemical structure searches {see formula (5), formula (4), etc. in instant claim 1} are required for elected Group I but are not required for non-elected Group II. Therefore, it would impose an undue burden on the Examiner and the U.S. Patent and Trademark Office’s resources if the Restriction were withdrawn. The requirement is still deemed proper and is therefore made FINAL. Claims 4-6 are withdrawn from further consideration pursuant to 37 CFR 1.142(b), as being drawn to a nonelected invention, there being no allowable generic or linking claim. Applicant timely traversed the restriction (election) requirement in the reply filed on June 5, 2025. Priority Acknowledgment is made of applicant's claim for foreign priority based on an application filed in India on May 2, 2018. It is noted, however, that applicant has not filed a certified copy of the Indian application as required by 37 CFR 1.55. Information Disclosure Statement The Examiner has considered the Information Disclosure Statements filed on October 24, 2022, November 11, 2022, April 24, 2023, August 26, 2023 (Third Party Submission) and October 12, 2023. The submissions are in compliance with the provisions of 37 CFR 1.97. Accordingly, the information disclosure statements are being considered by the examiner. Claim Objections Claims 1 and 7 are objected to because of the following informalities: in claim 1, the phrase “a suitable solvents” should be changed to “a suitable solvent” (line 9 of the page 16); in claim 1, the phrase “a suitable solvents” should be changed to “a suitable solvent” (the last line of the claim); in claim 7, the phrase “wherein preparation of formula (3) comprises” should be changed to “wherein E-N-((2E,4E)-5-(phenyl amino) penta-2,4-dienylidene) aniline hydrochloride of formula (3) is prepared comprising” (line 1 of the claim). 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. Claims 1-3 and 7 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 1 is confusing because of the product recited in step c) and the product being purified in step d). Step c) states the following: PNG media_image2.png 84 916 media_image2.png Greyscale . However, formula (1) is the Indocyanine Green and not the compound recited in step c) and step d). Therefore, claim 1 is indefinite. Correction is required. Claims dependent on claim 1 which do not resolve the problem in claim 1 are also indefinite. 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 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. Claims 1-3 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Wang et al. {CN 106631979 A}. A machine generated English translation of the CN document has been provided with this Office Action and will be referred to hereinafter. Wang et al. disclose a process for preparing Indocyanine green (ICG) by the following process on pages 2-4, 6 and 7 of the provided English translation, PNG media_image3.png 420 1078 media_image3.png Greyscale . PNG media_image4.png 166 1206 media_image4.png Greyscale PNG media_image5.png 198 1230 media_image5.png Greyscale PNG media_image6.png 192 1204 media_image6.png Greyscale PNG media_image7.png 168 1210 media_image7.png Greyscale PNG media_image8.png 298 1222 media_image8.png Greyscale . Wang et al. disclose the same reactants as instantly claimed, the same process steps as instantly claimed, the same base as instantly claimed and the same solvents as instantly claimed in his process for preparing Indocyanine green. Therefore, Wang et al. anticipate the instant claimed invention. Claims 1-3 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Wang et al. {Zhongguo Yiyao Gongye Zazhi (2006), 37(9), 584-585}. An English translation of Wang et al. was cited on the IDS filed October 12, 2023 and will be referred to hereinafter. Wang et al. (2006) disclose the process for preparing Indocyanine Green by the following process on page 2 of the English translation, PNG media_image9.png 382 674 media_image9.png Greyscale . PNG media_image10.png 128 786 media_image10.png Greyscale PNG media_image11.png 168 796 media_image11.png Greyscale PNG media_image12.png 238 796 media_image12.png Greyscale Wang et al. (2006) disclose the same reactants as instantly claimed, the same process steps as instantly claimed, the same base as instantly claimed and the same solvents as instantly claimed in his process for preparing Indocyanine green. Therefore, Wang et al. anticipate the instant claimed invention. Claims 1-3 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Jia et al. {CN 104130178 A}. A machine generated English translation of the CN document has been provided with this Office Action and will be referred to hereinafter. Jia et al. disclose a process for preparing a pharmaceutical Indocyanine Green by the following process on pages 4-6 of the provided English translation: PNG media_image13.png 336 1200 media_image13.png Greyscale PNG media_image14.png 316 1064 media_image14.png Greyscale PNG media_image15.png 162 1202 media_image15.png Greyscale PNG media_image16.png 360 1076 media_image16.png Greyscale PNG media_image17.png 430 1202 media_image17.png Greyscale Jia et al. disclose the same reactants as instantly claimed, the same process steps as instantly claimed, the same base as instantly claimed and the same solvents as instantly claimed in his process for preparing Indocyanine green. Therefore, Jia et al. anticipate the instant claimed invention. Claim Rejections - 35 USC § 103 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 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 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 of this title, 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. The factual inquiries set forth in Graham v. John Deere Co., 383 U.S. 1, 148 USPQ 459 (1966), that are applied for establishing a background for determining obviousness under 35 U.S.C. 103 are summarized as follows: 1. Determining the scope and contents of the prior art. 2. Ascertaining the differences between the prior art and the claims at issue. 3. Resolving the level of ordinary skill in the pertinent art. 4. Considering objective evidence present in the application indicating obviousness or nonobviousness. This application currently names joint inventors. In considering patentability of the claims the examiner presumes that the subject matter of the various claims was commonly owned as of the effective filing date of the claimed invention(s) absent any evidence to the contrary. Applicant is advised of the obligation under 37 CFR 1.56 to point out the inventor and effective filing dates of each claim that was not commonly owned as of the effective filing date of the later invention in order for the examiner to consider the applicability of 35 U.S.C. 102(b)(2)(C) for any potential 35 U.S.C. 102(a)(2) prior art against the later invention. Claims 1-3 and 7 are rejected under 35 U.S.C. 103 as being unpatentable over Wang et al. {CN 106631979 A}, Wang et al. {Zhongguo Yiyao Gongye Zazhi (2006), 37(9), 584-585} and Jia et al. {CN 104130178 A}, each taken alone, and each in further view of the teachings in Telfer et al. {U.S. Patent 5,262,549} and Kim et al. {Spectrochimica Acta, Part A: Molecular and Biomolecular Spectroscopy (2018), 192, 378-383}. Machine generated English translations of CN 106631979 A and CN 104130178 A have been provided with this Office Action and will be referred to hereinafter. Determination of the scope and content of the prior art (MPEP §2141.01) Applicant claims a process for preparing Indocyanine green of formula (1), PNG media_image18.png 262 890 media_image18.png Greyscale PNG media_image19.png 370 326 media_image19.png Greyscale PNG media_image20.png 458 360 media_image20.png Greyscale . Wang et al. disclose a process for preparing Indocyanine green (ICG) by the following process on pages 2-4, 6 and 7 of the provided English translation, PNG media_image3.png 420 1078 media_image3.png Greyscale . PNG media_image4.png 166 1206 media_image4.png Greyscale PNG media_image5.png 198 1230 media_image5.png Greyscale PNG media_image6.png 192 1204 media_image6.png Greyscale PNG media_image7.png 168 1210 media_image7.png Greyscale PNG media_image8.png 298 1222 media_image8.png Greyscale . Wang et al. (2006) disclose the process for preparing Indocyanine Green by the following process on page 2 of the English translation, PNG media_image9.png 382 674 media_image9.png Greyscale . PNG media_image10.png 128 786 media_image10.png Greyscale PNG media_image11.png 168 796 media_image11.png Greyscale PNG media_image12.png 238 796 media_image12.png Greyscale Jia et al. disclose a process for preparing a pharmaceutical Indocyanine Green by the following process on pages 4-6 of the provided English translation: PNG media_image13.png 336 1200 media_image13.png Greyscale PNG media_image14.png 316 1064 media_image14.png Greyscale PNG media_image15.png 162 1202 media_image15.png Greyscale PNG media_image16.png 360 1076 media_image16.png Greyscale PNG media_image17.png 430 1202 media_image17.png Greyscale Both Wang et al. references and the Jia et al. reference disclose the same reactants as instantly claimed, the same process steps as instantly claimed, the same base as instantly claimed and the same solvents as instantly claimed in claims 1-3 in their processes for preparing Indocyanine green. Ascertainment of the difference between the prior art and the claimed invention (MPEP §2141.02) Neither of the Wang et al. references or the Jia et al. reference teach the process of preparing E-N-((2E,4E)-5-(phenyl amino) penta-2,4-dienylidene) aniline hydrochloride of instant formula (3) as claimed in instant dependent claim 7. Finding of prima facie obviousness--rational and motivation (MPEP §2142-2143) However, Telfer et al. and Kim et al. each teach a process for preparing E-N-((2E,4E)-5-(phenyl amino) penta-2,4-dienylidene) aniline hydrochloride of instant formula (3) as claimed in instant claim 7. See the process for preparing Compound (X) in Figure 3 and in column 14 of Telfer et al., PNG media_image21.png 420 618 media_image21.png Greyscale PNG media_image22.png 174 484 media_image22.png Greyscale . See also the process of making compound (GAD) in Figure 1 on page 379 of Kim et al., PNG media_image23.png 694 746 media_image23.png Greyscale PNG media_image24.png 162 760 media_image24.png Greyscale . The claimed process is no more than a selective combination of prior art teachings done in a manner obvious to one of ordinary skill in the art since each step of the process appears to be relatively complete in itself and there is no indication of an interaction between steps of such a type that would lead one of ordinary skill in the art to doubt that a substitution of alternative steps known to the art could be made. In re Mostovych, 144 USPQ 38 (C.C.P.A. 1964). The instant claimed invention would have been suggested to one skilled in the art and therefore, the instant claimed invention would have been obvious to one skilled in the art. Reminder to Applicant As a gentle reminder, Applicant should specifically point out the support in the original disclosure {i.e., page number(s) and line number(s)} for any new claims or amended claims and for any amendments made to the disclosure. Making generic statements such as “all amendments are fully supported in the originally filed disclosure or the originally filed claims” without specifying page numbers and originally filed claim numbers are insufficient. See MPEP §714.02 and MPEP §2163.06(I). Telephone Inquiry Any inquiry concerning this communication or earlier communications from the examiner should be directed to: Laura L. Stockton (571) 272-0710. The examiner can normally be reached on Monday-Friday from 8:30 am to 6 pm, Eastern Standard 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, Joseph K. McKane can be reached on 571/272-0699. 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. /LAURA L STOCKTON/ Primary Examiner, Art Unit 1626 Work Group 1620 Technology Center 1600 June 27, 2025 Book XXV, page 89
Read full office action

Prosecution Timeline

Oct 24, 2022
Application Filed
Jun 27, 2025
Non-Final Rejection — §102, §103, §112
Oct 01, 2025
Response Filed
Dec 19, 2025
Final Rejection — §102, §103, §112 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12590209
PIGMENTED AND FLUORESCENT COMPOUNDS DERIVED FROM THE ADDITION OF A PRIMARY OR SECONDARY AMINE TO AN ALDEHYDE
2y 5m to grant Granted Mar 31, 2026
Patent 12590060
SCALABLE SYNTHETIC ROUTE FOR PSILOCIN AND PSILOCYBIN
2y 5m to grant Granted Mar 31, 2026
Patent 12581853
ORGANIC COMPOUND AND SENSOR AND SENSOR EMBEDDED DISPLAY PANEL AND ELECTRONIC DEVICE
2y 5m to grant Granted Mar 17, 2026
Patent 12577234
ANTAGONISTS OF THE MUSCARINIC ACETYLCHOLINE RECEPTOR M4
2y 5m to grant Granted Mar 17, 2026
Patent 12566173
HEMOLYTIC REAGENT, REAGENT KIT, AND METHOD FOR CLASSIFYING WHITE BLOOD CELLS
2y 5m to grant Granted Mar 03, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

AI Strategy Recommendation

Get an AI-powered prosecution strategy using examiner precedents, rejection analysis, and claim mapping.
Powered by AI — typically takes 5-10 seconds

Prosecution Projections

3-4
Expected OA Rounds
75%
Grant Probability
99%
With Interview (+33.7%)
2y 6m
Median Time to Grant
Moderate
PTA Risk
Based on 1342 resolved cases by this examiner. Grant probability derived from career allow 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