Prosecution Insights
Last updated: October 04, 2026
Application No. 18/723,633

HELICASE BCH2X AND USE THEREOF

Final Rejection §101§112
Filed
Jun 24, 2024
Priority
Dec 31, 2021 — nonprovisional of PCT/CN2021/143689 +1 more
Examiner
PAK, YONG D
Art Unit
1652
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
BGI GENOMICS CO., LTD.
OA Round
2 (Final)
75%
Grant Probability
Favorable
3-4
OA Rounds
7m
Est. Remaining
89%
With Interview

Examiner Intelligence

Grants 75% — above average
75%
Career Allowance Rate
711 granted / 953 resolved
+14.6% vs TC avg
Moderate +14% lift
Without
With
+14.3%
Interview Lift
resolved cases with interview
Typical timeline
2y 10m
Avg Prosecution
63 currently pending
Career history
1006
Total Applications
across all art units

Statute-Specific Performance

§101
6.8%
-33.2% vs TC avg
§103
23.1%
-16.9% vs TC avg
§102
18.9%
-21.1% vs TC avg
§112
32.5%
-7.5% vs TC avg
Black line = Tech Center average estimate • Based on career data from 953 resolved cases

Office Action

§101 §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 This application is a 371 of PCT/CN2021/143689. The amendment filed on July 14, 2026 has been entered. Status of Claims Claims 1, 4-11, and 13-21 are pending. Claims 1, 4-11, and 13-21 are under examination. Response to Amendments/Arguments Drawings Applicant’s arguments, see pages 9-10 of the Remarks, filed July 14, 2026, with respect to the drawings have been fully considered and are persuasive. FIG. 7 has been replaced with new FIG. 7. Therefore, the objection of the drawings has been withdrawn. Nucleotide and/or Amino Acid Sequence Disclosures Applicant’s arguments, see page 10 of the Remarks, filed July 14, 2026, with respect to the drawings have been fully considered and are persuasive. The nucleotide and amino acid sequence on pages 12-15 have been amended to include sequence identifiers for the nucleotide and amino acid sequence. Therefore, the objection of the specification has been withdrawn. Claim Rejections - 35 USC § 112(b) 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. Withdrawn Rejection Applicant’s arguments, see page 10 of the Remarks, filed July 14, 2026, with respect to claim 1 have been fully considered and are persuasive. Claim 1 has been amended to recite only one specific range. Therefore, the rejection of claim 1 and claims depending therefrom under 35 U.S.C. 112(b) been withdrawn. New Rejections Claim 6 and claim 18 depending therefrom 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 6 recites the limitation "(iii)…the nucleotide sequence" in line 5. There is insufficient antecedent basis for this limitation in the claim. It is unclear if the nucleotide sequence refers to the nucleotide sequence of (i) or (ii). Appropriate correction is required. Claim 16 is 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 16 recites the limitation "helicase according to claim 1, wherein the amino acid substitution" in lines 1-2. There is insufficient antecedent basis for this limitation in the claim. Claim 1 does not recite “an amino acid substitution” does not allow for amino acid substitutions. Appropriate correction is required. Claim Rejections - 35 USC § 112(d) The following is a quotation of 35 U.S.C. 112(d): (d) REFERENCE IN DEPENDENT FORMS.—Subject to subsection (e), a claim in dependent form shall contain a reference to a claim previously set forth and then specify a further limitation of the subject matter claimed. A claim in dependent form shall be construed to incorporate by reference all the limitations of the claim to which it refers. The following is a quotation of pre-AIA 35 U.S.C. 112, fourth paragraph: Subject to the following paragraph [i.e., the fifth paragraph of pre-AIA 35 U.S.C. 112], a claim in dependent form shall contain a reference to a claim previously set forth and then specify a further limitation of the subject matter claimed. A claim in dependent form shall be construed to incorporate by reference all the limitations of the claim to which it refers. Claim 16 is rejected under 35 U.S.C. 112(d) or pre-AIA 35 U.S.C. 112, 4th paragraph, as being of improper dependent form for failing to further limit the subject matter of the claim upon which it depends, or for failing to include all the limitations of the claim upon which it depends. Claim 16 recites the limitation "helicase according to claim 1, wherein the amino acid substitution" in lines 1-2. Claim 1 is directed to a helicase having the amino acid sequence of SEQ ID NO:1, 2, or 3 and does not allow for amino acid substitutions. Therefore, claim 16 fails to further limit claim 1. Applicant may cancel the claim(s), amend the claim(s) to place the claim(s) in proper dependent form, rewrite the claim(s) in independent form, or present a sufficient showing that the dependent claim(s) complies with the statutory requirements. Claim Rejections - 35 USC § 112(a) Applicant’s arguments, see pages 10-11 of the Remarks, filed July 14, 2026, with respect to claims 1-11 and 13-21 have been fully considered and are persuasive. Claim 1 has been amended to narrow the genus of helicases to a helicase having the amino acid sequence of SEQ ID NO:1, 2, or 3, which are fully described. Therefore, the rejection of claims 1-11 and 13-21 under 35 U.S.C. 112(a) been withdrawn. Applicant’s arguments, see pages 10-11 of the Remarks, filed July 14, 2026, with respect to claims 1-11 and 13-21 have been fully considered and are persuasive. Claim 1 has been amended to narrow the scope of helicases to a helicase having the amino acid sequence of SEQ ID NO:1, 2, or 3, which are fully enabled. Therefore, the rejection of claims 1-11 and 13-21 under 35 U.S.C. 112(a) been withdrawn. Claim Rejections - 35 USC § 101 Applicant’s arguments, see pages 12-13 of the Remarks, filed July 14, 2026, with respect to claims 1 and 3-4 have been fully considered and are persuasive. Claim 1 has been amended to recite a helicase having the amino acid sequence of SEQ ID NO:1, 2, or 3 and an N-terminal and/or C-terminal heterologous extensions, which no longer read on a product of nature. Therefore, the rejection of claims 1 and 3-4 under 35 U.S.C. 101 has been withdrawn. Conclusion Claims 1, 4-11, and 13-21 are pending. Claims 6, 16, and 18 are rejected. Claims 1, 4-5, 7-11, 13-15, 17, and 19-21 are allowed. Applicant's amendment necessitated the new ground(s) of rejection presented in this Office action. Accordingly, THIS ACTION IS MADE FINAL. See MPEP § 706.07(a). Applicant is reminded of the extension of time policy as set forth in 37 CFR 1.136(a). A shortened statutory period for reply to this final action is set to expire THREE MONTHS from the mailing date of this action. In the event a first reply is filed within TWO MONTHS of the mailing date of this final action and the advisory action is not mailed until after the end of the THREE-MONTH shortened statutory period, then the shortened statutory period will expire on the date the advisory action is mailed, and any nonprovisional extension fee (37 CFR 1.17(a)) pursuant to 37 CFR 1.136(a) will be calculated from the mailing date of the advisory action. In no event, however, will the statutory period for reply expire later than SIX MONTHS from the mailing date of this final action. Any inquiry concerning this communication or earlier communications from the examiner should be directed to YONG D PAK whose telephone number is (571)272-0935. The examiner can normally be reached M-Th: 5:30 am - 3:30 pm. 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, Robert Mondesi can be reached on 408-918-7584. 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. /YONG D PAK/Primary Examiner, Art Unit 1652
Read full office action

Prosecution Timeline

Jun 24, 2024
Application Filed
Apr 14, 2026
Non-Final Rejection mailed — §101, §112
Jul 14, 2026
Response Filed
Sep 14, 2026
Final Rejection mailed — §101, §112 (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

3-4
Expected OA Rounds
75%
Grant Probability
89%
With Interview (+14.3%)
2y 10m (~7m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 953 resolved cases by this examiner. Grant probability derived from career allowance rate.

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