Prosecution Insights
Last updated: July 17, 2026
Application No. 18/047,199

GENE THERAPY FOR BARDET-BIEDL SYNDROME

Non-Final OA §102§103
Filed
Oct 17, 2022
Priority
Apr 17, 2020 — GB 2005641.2 +1 more
Examiner
MONTANARI, DAVID A
Art Unit
1632
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
Ucl Business Ltd.
OA Round
2 (Non-Final)
65%
Grant Probability
Favorable
2-3
OA Rounds
0m
Est. Remaining
99%
With Interview

Examiner Intelligence

Grants 65% — above average
65%
Career Allowance Rate
494 granted / 760 resolved
+5.0% vs TC avg
Strong +49% interview lift
Without
With
+49.4%
Interview Lift
resolved cases with interview
Typical timeline
3y 9m
Avg Prosecution
37 currently pending
Career history
818
Total Applications
across all art units

Statute-Specific Performance

§101
1.6%
-38.4% vs TC avg
§103
53.8%
+13.8% vs TC avg
§102
10.3%
-29.7% vs TC avg
§112
28.1%
-11.9% vs TC avg
Black line = Tech Center average estimate • Based on career data from 760 resolved cases

Office Action

§102 §103
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 . Applicant’s arguments and amendments filed on 3/20/2026 have been entered. Claims 1, 17 and 20 have been amended. Claims 12-16 have been cancelled. In view of Applicant’s amendments to the claims the 102 and 103 rejections have been withdrawn. While the allowability of claim 16 was previously noted and its limitations (SEQ ID NOs: 8 and 9) have now been incorporated into claim 1, upon further search the teachings of Beales et al. would obviate the sequences set forth in SEQ ID NOs: 8 and 9. Claims 1, 3-8, 17, 20, 23 and 24 are examined in the instant application. 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 (i.e., changing from AIA to pre-AIA ) 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. Claim(s) 1, 5, 7, 17, 20 and 24 is/are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Beales et al. (WO 2018/203092 A1). Regarding claims 1, 5, 7, 17, 20 and 24, Beales et al. a pharmaceutical composition comprising an AAV 2/8 or AAV9 vector for treating retinal degeneration associated with BBS, wherein the vector comprises a promoter operably linked to a BBS1 gene comprising the nucleotide sequence of SEQ ID NOs: 8 or 9, wherein the promoter is either the CMV or CAG promoter (see Abstract, claims 1-6, 10 and 23 and Fig. 3). Regarding SEQ ID NO: 8, Beale teaches SEQ ID NO: 11, which is 100% identical to instant SEQ ID NO: 8. PNG media_image1.png 111 618 media_image1.png Greyscale Regarding SEQ ID NO: 9, Beale teaches SEQ ID NO: 12, which is 100% identical to instant SEQ ID NO: 9. PNG media_image2.png 117 616 media_image2.png Greyscale Thus, Beale clearly anticipate the invention of claims 1, 5, 7, 17, 20 and 24. 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 (i.e., changing from AIA to pre-AIA ) 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, 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, 3 and 4 is/are rejected under 35 U.S.C. 103 as being unpatentable over Beales et al. (WO 2018/203092 A1) in view of Kirin et al. (WO 2017 /197355-A2, cited on IDS filed on 9/4/2024) and evidenced by the teachings of Young et al. (2003, Ophthalmol. Vis. Sci. 44, pgs. 4076-4085). Regarding claim 1, Beales et al. a pharmaceutical composition comprising an AAV 2/8 or AAV9 vector for treating retinal degeneration associated with BBS, wherein the vector comprises a promoter operably linked to a BBS1 gene comprising the nucleotide sequence of SEQ ID NOs: 8 or 9, wherein the promoter is either the CMV or CAG promoter (see Abstract, claims 1-6, 10 and 23 and Fig. 3). Regarding SEQ ID NO: 8, Beale teaches SEQ ID NO: 11, which is 100% identical to instant SEQ ID NO: 8. PNG media_image1.png 111 618 media_image1.png Greyscale Regarding SEQ ID NO: 9, Beale teaches SEQ ID NO: 12, which is 100% identical to instant SEQ ID NO: 9. PNG media_image2.png 117 616 media_image2.png Greyscale Beales does not teach: a human RK promoter. Regarding a human RK promoter in claim 3, Kirin et al. teach an AAV9 vector for treating retinal degeneration associated with BBS, wherein the vector comprises an RK promoter operably linked to a BBS1 gene (parags. 81, 162, 172 and 179). While Kirin does not explicitly state that the RK promoter is human, Kirin cites, when discussing the RK promoter, Young et al. (2003) Ophthalmol. Vis. Sci. 44, pgs. 4076-4085), which teaches the human RK promoter. Regarding claim 4, as Kirin cites Young et al. for the human RK promoter, Young also teaches a nucleotide sequence for the human RK promoter which is 100% identical to instant SEQ ID NO: 7. PNG media_image3.png 294 580 media_image3.png Greyscale Thus, at the time of filing it would have been prima facie obvious to the ordinary artisan to combine the teachings of Beale regarding a vector for treating retinal degeneration associated with BBS with the teachings of Kirin regarding a vector for treating retinal degeneration associated with BBS, wherein the vector comprises a human RK promoter to arrive at the claimed invention. One of ordinary skill in the art would have been motivated to make such a combination since the nucleotide sequence for the RK promoter set forth in instant SEQ ID NO: 7 was known and used in the art as demonstrated by Kirrin. There would have been a reasonable expectation of success that the nucleotide sequence of Kirrin would work in the vector of Beale since Kirrin teaches that their nucleotide sequence was for the RK promoter. Thus, the cited art provides the requisite teachings and motivations to make and use the invention as claimed. Claim(s) 1, 5 and 6 is/are rejected under 35 U.S.C. 103 as being unpatentable over Beales et al. (WO 2018/203092 A1) in view of Kirin et al. (WO 2017 /197355-A2, cited on IDS filed on 9/4/2024) and evidenced by the teachings of Young et al. (2003, Ophthalmol. Vis. Sci. 44, pgs. 4076-4085) as applied to claims 1, 3 and 4 above, and further in view of Zhang et al. (1991, Virology, Vol. 182, pgs. 865-869). Beale is relied upon above in teaching an AAV 2/8 or AAV9 vector for treating retinal degeneration associated with BBS, wherein the vector comprises a promoter operably linked to a BBS1 gene comprising the nucleotide sequence of SEQ ID NOs: 8 or 9, wherein the promoter is the CMV promoter. Beale does not teach: a CMV promoter having a sequence set forth in SEQ ID NO: 5. Regarding claim 6 and a CMV promoter having a sequence set forth in SEQ ID NO: 5, Zhang et al. teach using the CMV promoter, which is 100% identical to the sequence set forth in instant SEQ ID NO: 5, to drive expression of the CAT gene (see Abstract and pgs. 865 and 868). PNG media_image4.png 286 566 media_image4.png Greyscale Thus, at the time of filing it would have been prima facie obvious to the ordinary artisan to combine the teachings of Beale regarding a vector for treating retinal degeneration associated with BBS, wherein the vector comprises a CMV promoter with the teachings of Zhang regarding the nucleotide sequence for the CMV promoter to arrive at the claimed invention. One of ordinary skill in the art would have been motivated to make such a combination since the nucleotide sequence for the CMV promoter set forth in instant SEQ ID NO: 6 was known and used in the art as demonstrated by Zhang. There would have been a reasonable expectation of success that the nucleotide sequence of Zhang would work in the vector of Beale since Zhang teaches that their nucleotide sequence was for the CMV promoter. Thus, the cited art provides the requisite teachings and motivations to make and use the invention as claimed. Claim(s) 1, 7 and 8 is/are rejected under 35 U.S.C. 103 as being unpatentable over Beales et al. (WO 2018/203092 A1) in view of Kirin et al. (WO 2017 /197355-A2, cited on IDS filed on 9/4/2024) and evidenced by the teachings of Young et al. (2003, Ophthalmol. Vis. Sci. 44, pgs. 4076-4085) as applied to claims 1, 3 and 4 above, and further in view of Wickersham et al. (2010, Nature Protocols, Vol. 5(3), pgs. 595-606). Beale is relied upon above in teaching an AAV 2/8 or AAV9 vector for treating retinal degeneration associated with BBS, wherein the vector comprises a promoter operably linked to a BBS1 gene comprising the nucleotide sequence of SEQ ID NOs: 8 or 9, wherein the promoter is the CAG promoter. Beale does not teach: a CAG promoter having a sequence set forth in SEQ ID NO: 3. Regarding claim 8 and a CAG promoter having a sequence set forth in SEQ ID NO: 3, Wickersham et al. teach using the CAG promoter, which is 100% identical to the sequence set forth in instant SEQ ID NO: 3, to drive expression of transgenes in a replication-deficient rabies virus (see Abstract, Introduction and pg. 599). PNG media_image5.png 651 574 media_image5.png Greyscale Thus, at the time of filing it would have been prima facie obvious to the ordinary artisan to combine the teachings of Beale regarding a vector for treating retinal degeneration associated with BBS, wherein the vector comprises a CAG promoter with the teachings of Wickersham regarding the nucleotide sequence for the CAG promoter to arrive at the claimed invention. One of ordinary skill in the art would have been motivated to make such a combination since the nucleotide sequence for the CAG promoter set forth in instant SEQ ID NO: 3 was known and used in the art as demonstrated by Wickersham. There would have been a reasonable expectation of success that the nucleotide sequence of Wickersham would work in the vector of Beale since Wickersham teaches that their nucleotide sequence was for the CAG promoter. Thus, the cited art provides the requisite teachings and motivations to make and use the invention as claimed. Claim(s) 23 is/are rejected under 35 U.S.C. 103 as being unpatentable over Beales et al. (WO 2018/203092 A1) in view of Kirin et al. (WO 2017 /197355-A2, cited on IDS filed on 9/4/2024) and evidenced by the teachings of Young et al. (2003, Ophthalmol. Vis. Sci. 44, pgs. 4076-4085) as applied to claims 1, 3 and 4 above, and further in view of Sahel et al. (2015, Cold Spring Harbor Perspectives in Medicine, pgs. 1-25). Beale is relied upon above in teaching an AAV 2/8 vector for treating retinal degeneration associated with BBS, wherein the vector comprises a promoter operably linked to a BBS1 gene comprising the nucleotide sequence of SEQ ID NOs: 8 or 9, wherein the promoter is the CMV promoter. Beale does not teach: Using AAV2/7m8. Regarding claim 23 and AAV2/7m8, Sahel et al. teach that the 7m8 variant of AAV mediates efficient panretinal delivery of the therapeutic gene from the vitreous and that “The 7m8 vector enabled noninvasive, long-term histological and functional rescue of these disease phenotypes across the entire retina, offering clinically relevant implications for further gene therapy development.” (pg. 12 col. 2 last 11 lines). Sahel continues to teach that gene therapy has had success in treating inherited retinal disorders such as Bardet-Biedl (pgs. 6 and 12-14). Thus, at the time of filing it would have been prima facie obvious to the ordinary artisan to modify the teachings of Beale regarding an AAV 2/8 vector for treating retinal degeneration associated with BBS, wherein the vector encodes BBS1 with the teachings of Saleh regarding the 7m8 variant of AAV to arrive at the claimed invention. One of ordinary skill in the art would have been motivated to make such a modification since Saleh teaches that 7m8 variant of AAV has exhibited success in delivery therapeutic genes to the retina. Further motivation is provided by Beale that AAV vectors such as AAV2 can be used in their vector expressing a BBS1 gene. There would have been a reasonable expectation of success that AAV vector of Beale could be modified to be an AAV2/7m8 variant since Saleh teaches success using 2/7m8 to deliver a gene to the retina of the eye. Thus, the cited art provides the requisite teachings and motivations to make and use the invention as claimed. Conclusion No claims are allowed. Any inquiry concerning this communication or earlier communications from the examiner should be directed to DAVID A MONTANARI whose telephone number is (571)272-3108. The examiner can normally be reached M-Tr 8-6. 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, Peter Paras can be reached at 571-272-4517. 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. /DAVID A MONTANARI/Examiner, Art Unit 1632
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Prosecution Timeline

Oct 17, 2022
Application Filed
Dec 23, 2025
Non-Final Rejection mailed — §102, §103
Mar 20, 2026
Response Filed
Jun 23, 2026
Non-Final Rejection mailed — §102, §103 (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

2-3
Expected OA Rounds
65%
Grant Probability
99%
With Interview (+49.4%)
3y 9m (~0m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 760 resolved cases by this examiner. Grant probability derived from career allowance rate.

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