Prosecution Insights
Last updated: April 19, 2026
Application No. 18/396,156

Digital Analysis of Circulating Tumor Cells in Blood Samples

Non-Final OA §112§DP
Filed
Dec 26, 2023
Examiner
GROSS, CHRISTOPHER M
Art Unit
1684
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
The General Hospital Corporation
OA Round
1 (Non-Final)
63%
Grant Probability
Moderate
1-2
OA Rounds
4y 1m
To Grant
99%
With Interview

Examiner Intelligence

Grants 63% of resolved cases
63%
Career Allow Rate
410 granted / 651 resolved
+3.0% vs TC avg
Strong +41% interview lift
Without
With
+41.2%
Interview Lift
resolved cases with interview
Typical timeline
4y 1m
Avg Prosecution
37 currently pending
Career history
688
Total Applications
across all art units

Statute-Specific Performance

§101
3.2%
-36.8% vs TC avg
§103
31.9%
-8.1% vs TC avg
§102
27.6%
-12.4% vs TC avg
§112
23.1%
-16.9% vs TC avg
Black line = Tech Center average estimate • Based on career data from 651 resolved cases

Office Action

§112 §DP
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 DETAILED ACTION Responsive to claim set of 12/26/2023 and election of 12/9/2025 Claims pending 1-20 Claims withdrawn 20 Claims currently under consideration 1-19 Priority This application has a filing date of 12/26/2023 and is a CON of 17/065,889 10/08/2020 PAT 11898209 17/065,889 is a CON of 15/560,324 09/21/2017 ABN 15/560,324 is a 371 of PCT/US2016/024367 03/25/2016 PCT/US2016/024367 has PRO 62/253,619 11/10/2015 PCT/US2016/024367 has PRO 62/219,339 09/16/2015 PCT/US2016/024367 has PRO 62/137,891 03/25/2015 Election/Restrictions Applicant’s election without traverse of group I in the reply filed on 12/9/2025 is acknowledged. Claim 20 stands withdrawn from further consideration pursuant to 37 CFR 1.142(b) as being drawn to a nonelected invention group, there being no allowable generic or linking claim. Election was made without traverse in the reply filed on 12/9/2025 The requirement is still deemed proper and is therefore made FINAL. 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 obviousness-type 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); and 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 a nonstatutory double patenting ground provided the conflicting application or patent either is shown to be commonly owned with this application, or claims an invention made as a result of activities undertaken within the scope of a joint research agreement. Effective January 1, 1994, a registered attorney or agent of record may sign a terminal disclaimer. A terminal disclaimer signed by the assignee must fully comply with 37 CFR 3.73(b). Claims 1-19 are rejected on the ground of nonstatutory obviousness-type double patenting as being unpatentable over claims of U.S. Patent No. 11898209 (IDS entry 9/16/2024; referred to hereafter as ‘209.) in view of Mitas (US AppPub 20070231822). Although the claims at issue are not identical, they are not patently distinct from each other because, for example, said present claims represent patentably indistinct methodological variants of all that is recited in the conflicting claims of ‘209 or, alternatively the subject matter claimed overlaps in scope to a large extent and, as a result, are rendered obvious. The following is illustrative. For claim(s) 2, ‘209 is drawn to reducing volume before isolating RNA as in claim 2. For claim(s) 8, ‘209 is drawn to comprising removing contaminants from the (recited) solution containing the cDNA molecules before encapsulating cDNA molecules as in claim 3. For claim(s) 4, ‘209 is drawn to wherein generating cDNA molecules from isolated RNA comprises conducting RT-PCR of the (recited) isolated RNA. Additionally, it would have been obvious to one having ordinary skill in the art at the time the invention was made to modify embodiments of ‘209 that fall outside the scope of the present application to select a specifically disclosed embodiment that falls within the scope of the present application because each set of claims concern reagents similar if not the same physiochemical properties in that they all possess a common core structure and accordingly biological activities (e.g. FAT1 and AGR2 PCR amplicons from SEQ IDs 22 & 23 and SEQ IDs 1 & 2, respectively). Furthermore, one of ordinary skill in the art would have been motivated to make such a modification because they are disclosed as “preferred” since the dependent claims of ‘209 “teach toward” Applicant’s presently claimed physical steps of analyzing tumor cells circulating in blood, especially in view of Mitas, who teaches, for instance, AGR2 as associated with lung cancer as currently claimed as well as pancreatic and breast cancers of ‘209 (cf abstract). 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 1-19 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 pre-AIA the applicant regards as the invention, as evidenced by ‘209 claim 1 and/or Mitas (US AppPub 20070231822) Where applicant acts as his or her own lexicographer to specifically define a term of a claim contrary to its ordinary meaning, the written description must clearly redefine the claim term and set forth the uncommon definition so as to put one reasonably skilled in the art on notice that the applicant intended to so redefine that claim term. Process Control Corp. v. HydReclaim Corp., 190 F.3d 1350, 1357, 52 USPQ2d 1029, 1033 (Fed. Cir. 1999). FAT1 being a “lung cancer-selective” in claim 1 is contradicted by FAT1 being pancreatic-cancer selective also in claim 1. Similarly, again amplified with the same primers, AGR2 being lung cancer-selective contradicted by ‘209 patented claim 1, being in both pancreatic and breast cancers. Moreover, beyond the presently claimed lung cancer selectivity, Mitas like ‘209 indicates AGR2 is a genetic marker for prostate and breast cancers as well as pancreatic cancer. The term “cancer-selective” as recited in claim 1 is deemed indefinite because the specification does not clearly redefine the term. In accordance with MPEP 2173.02: If the language of the claim is such that a person of ordinary skill in the art could not interpret the metes and bounds of the claim so as to understand how to avoid infringement, a rejection of the claim under 35 U.S.C. 112, second paragraph, would be appropriate. See Morton Int ’l, Inc. v. Cardinal Chem. Co., 5 F.3d 1464, 1470, 28 USPQ2d 1190, 1195 (Fed. Cir. 1993). In so far as the metes and bounds of the offending claim(s) may not be interpreted properly for the reasons above, all dependent claims therefrom claim 1 are rejected as being indefinite as well. 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. Any inquiry concerning this communication or earlier communications from the examiner should be directed to CHRISTOPHER M GROSS whose telephone number is (571)272-4446. The examiner can normally be reached M-F 10-6. 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, Heather Calamita can be reached on (571)272-2876. 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. /CHRISTOPHER M GROSS/Primary Examiner, Art Unit 1684
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Prosecution Timeline

Dec 26, 2023
Application Filed
Jan 07, 2026
Non-Final Rejection — §112, §DP (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

1-2
Expected OA Rounds
63%
Grant Probability
99%
With Interview (+41.2%)
4y 1m
Median Time to Grant
Low
PTA Risk
Based on 651 resolved cases by this examiner. Grant probability derived from career allow rate.

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