Prosecution Insights
Last updated: April 19, 2026
Application No. 17/673,686

MUTANT CALRETICULIN FOR THE DIAGNOSIS OF MYELOID MALIGNANCIES

Non-Final OA §102
Filed
Feb 16, 2022
Examiner
AEDER, SEAN E
Art Unit
1642
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
Cemm - Forschungszentrum Für Molekulare Medizin GmbH
OA Round
7 (Non-Final)
57%
Grant Probability
Moderate
7-8
OA Rounds
3y 2m
To Grant
76%
With Interview

Examiner Intelligence

Grants 57% of resolved cases
57%
Career Allow Rate
793 granted / 1395 resolved
-3.2% vs TC avg
Strong +20% interview lift
Without
With
+19.5%
Interview Lift
resolved cases with interview
Typical timeline
3y 2m
Avg Prosecution
81 currently pending
Career history
1476
Total Applications
across all art units

Statute-Specific Performance

§101
13.8%
-26.2% vs TC avg
§103
25.4%
-14.6% vs TC avg
§102
20.2%
-19.8% vs TC avg
§112
24.5%
-15.5% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1395 resolved cases

Office Action

§102
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and the fee set forth in 37 CFR 1.17(e) has been timely paid, the finality of the previous Office action has been withdrawn pursuant to 37 CFR 1.114.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 2/17/26 has been entered. Claims 89-109 and 111 are pending. Claims 89, 94-96, and 111 have been amended by Applicant. Claims 96 and 111 are withdrawn from further consideration by the examiner under 37 CFR 1.142(b) as being drawn to a non-elected invention. Claims 89-95 and 97-109 are currently under examination. Elected species is SEQ ID NO: 291 and previously rejoined species is SEQ ID NO: 150. SEQ ID NO: 296 is now rejoined. No other species have been rejoined. The text of those sections of Title 35, U.S. Code not included in this action can be found in a prior Office action. Claim Interpretation Claim 89 is drawn to a composition comprising a labeled polynucleotide, wherein said labeled polynucleotide detects a mutated calreticulin allele comprising a recited sequence and does not detect a wild-type calreticulin allele in a calreticulin exon 9 nucleic acid sequence (SEQ ID NO:435) under allele-specific conditions. Elected mutated calreticulin allele sequences include elected SEQ ID NO: 291 and previously rejoined SEQ ID NO:150, which are both full-length calreticulin cDNA allele sequences (each comprising a mutated exon 9 region). Previously rejoined SEQ ID NO:150 is cDNA of a full-length mutated calreticulin allele comprising newly rejoined SEQ ID NO: 296. SEQ ID NO:435 is not a full-length calreticulin sequence; rather, SEQ ID NO:435 is a wild-type calreticulin exon 9 nucleic acid sequence. The examiner interprets any labeled polynucleotide that would hybridize anywhere on mutated calreticulin sequence comprising a recited SEQ ID NO or complement thereof, due to having a sequence 100% complementary to the mutated sequence (or complement thereof), and that would not hybridize to a wild-type calreticulin allele in a calreticulin exon 9 sequence due reduction in sequence complementary to wild-type calreticulin allele in a calreticulin exon 9 sequence as a polynucleotide that “detects” a mutated calreticulin allele comprising a recited sequence and does not detect a wild-type calreticulin allele in a calreticulin exon 9 nucleic acid sequence (SEQ ID NO:435) under allele-specific conditions because (i) the labeled polynucleotide would adhere to the mutated calreticulin allele (or complement thereof) due to the presence of a 100% complementary sequence, (ii) the labeled polynucleotide would not detect/adhere to a wild-type calreticulin allele in a calreticulin exon 9 sequence (SEQ ID NO:435) due to a reduction in sequence complementary to a wild-type calreticulin allele in a calreticulin exon 9 sequence, and (iii) the labeled polynucleotide would not adhere to other alleles lacking sequence complementary to the labeled polynucleotide sequence. Comparison of instant SEQ ID NO:296 and instant SEQ ID NO:150: PNG media_image1.png 343 594 media_image1.png Greyscale Rejection Withdrawn All previous rejections are withdrawn. New Rejections Claim Rejections - 35 USC § 102 Claim(s) 89-94 and 97-109 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Bennett et al (WO 02/068688 A1; 9/6/02). Bennett et al teaches a composition comprising a labeled polynucleotide probe (FAM-CCAGACGCTGGTGGTGCAGTTCAC-TAMRA; SEQ ID NO: 6) for Northern blotting to detect calreticulin polynucleotides amplified using the forward primer SEQ ID NO:4 and the reverse primer SEQ ID NO:5 (lines 7-13 on page 80, in particular). On a Northern blot, the probe would detect calreticulin mRNA, cDNA, and genomic DNA generated from frameshift-mutated calreticulin alleles comprising recited sequences including instant SEQ ID NO:296 under allele-specific conditions in any sample due to 100% homology between the probe of Bennett et al and a 24-nucleotide segment of instant SEQ ID NO:150 (cDNA of a full-length mutated calreticulin allele comprising newly rejoined and recited SEQ ID NO: 296). At the last paragraph on page 54, the instant specification defines SEQ ID NO:435 as “The wild-type nucleic acid sequence of exon 9 of the calreticulin gene.” On a Northern blot, the probe would not detect mRNA, cDNA, or genomic DNA generated from the wild-type calreticulin allele in a calreticulin exon 9 nucleic acid sequence (SEQ ID NO:435) under allele-specific conditions in any sample due to the low homology between instant SEQ ID NO:435 and SEQ ID NO:6 (or complements thereof). Further, (i) the labeled polynucleotide would adhere to the mutated calreticulin allele (or complement thereof) due to the presence of a 100% complementary sequence, (ii) the labeled polynucleotide would not detect/adhere to a wild-type calreticulin allele in a calreticulin exon 9 sequence (SEQ ID NO:435) due to a reduction in sequence complementary to a wild-type calreticulin allele in a calreticulin exon 9 sequence, and (iii) the labeled polynucleotide would not adhere to other alleles lacking sequence complementary to the labeled polynucleotide sequence. Comparison of instant SEQ ID NO:150 (mutated calreticulin cDNA comprising SEQ ID NO:296) and Northern probe (labeled SEQ ID NO:6) of Bennett: Query Match 1.9%; Score 24; DB 1; Length 24; Best Local Similarity 100.0%; Matches 24; Conservative 0; Mismatches 0; Indels 0; Gaps 0; Qy 264 CCAGACGCTGGTGGTGCAGTTCAC 287 Db 1 CCAGACGCTGGTGGTGCAGTTCAC 24 Comparisons of instant SEQ ID NO:435 and Northern probe (labeled SEQ ID NO:6) of Bennett et al (result 1 is best alignment of sequences; result 2 is best alignment of complementary sequences): RESULT 1 NASEQ2_06242025_102521 Query Match 1.3%; Score 10.2; DB 1; Length 24; Best Local Similarity 80.0%; Matches 12; Conservative 0; Mismatches 3; Indels 0; Gaps 0; Qy 589 CAGAAGGGGGTGGTG 603 Db 2 CAGACGCTGGTGGTG 16 RESULT 2 NASEQ2_06242025_102521/c Query Match 1.0%; Score 8; DB 1; Length 24; Best Local Similarity 58.3%; Matches 14; Conservative 0; Mismatches 10; Indels 0; Gaps 0; Qy 578 GAGGAGGGCAGCAGAAGGGGGTGG 601 Db 24 GTGAACTGCACCACCAGCGTCTGG 1 Claim Objections Claim 95 is objected to for being dependent upon a rejected claim. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to SEAN E AEDER whose telephone number is (571)272-8787. The examiner can normally be reached M-F 9am-6pm 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, Samira Jean-Louis can be reached at (571)270-3503. 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. /SEAN E AEDER/Primary Examiner, Art Unit 1642
Read full office action

Prosecution Timeline

Feb 16, 2022
Application Filed
Dec 12, 2023
Non-Final Rejection — §102
Mar 11, 2024
Response Filed
Apr 03, 2024
Non-Final Rejection — §102
Oct 05, 2024
Response Filed
Oct 21, 2024
Final Rejection — §102
Dec 24, 2024
Response after Non-Final Action
Jan 22, 2025
Request for Continued Examination
Jan 30, 2025
Response after Non-Final Action
Feb 05, 2025
Non-Final Rejection — §102
May 08, 2025
Response Filed
Jun 24, 2025
Non-Final Rejection — §102
Oct 07, 2025
Applicant Interview (Telephonic)
Oct 07, 2025
Examiner Interview Summary
Oct 24, 2025
Response Filed
Nov 17, 2025
Final Rejection — §102
Jan 19, 2026
Response after Non-Final Action
Feb 17, 2026
Request for Continued Examination
Feb 24, 2026
Response after Non-Final Action
Mar 25, 2026
Non-Final Rejection — §102 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12590156
FUSION ANTIBODY FOR PRESENTING ANTIGEN-DERIVED T CELL ANTIGEN EPITOPE OR PEPTIDE CONTAINING SAME ON CELL SURFACE, AND COMPOSITION COMPRISING SAME
2y 5m to grant Granted Mar 31, 2026
Patent 12580049
TUMOR MICROENVIRONMENT-BASED METHODS FOR ASSESSING CAR-T AND OTHER IMMUNOTHERAPIES
2y 5m to grant Granted Mar 17, 2026
Patent 12571799
BIOMARKERS FOR DETERMINING THE EFFICACY OF IMMUNE CHECKPOINT INHIBITORS
2y 5m to grant Granted Mar 10, 2026
Patent 12559800
KMT2A-MAML2 FUSION MOLECULES AND USES THEREOF
2y 5m to grant Granted Feb 24, 2026
Patent 12559801
COMPOSITIONS AND METHODS FOR TREATING BREAST CANCER
2y 5m to grant Granted Feb 24, 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

7-8
Expected OA Rounds
57%
Grant Probability
76%
With Interview (+19.5%)
3y 2m
Median Time to Grant
High
PTA Risk
Based on 1395 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