Prosecution Insights
Last updated: October 21, 2026
Application No. 18/709,645

ANTI-INFLAMMATORY VISCOSUPPLEMENTATION AGENT CONTAINING HYALURONIC ACID

Non-Final OA §102§112
Filed
May 13, 2024
Priority
Nov 15, 2021 — DE 102021212812.2 +1 more
Examiner
AZPURU, CARLOS A
Art Unit
1617
Tech Center
1600 — Biotechnology & Organic Chemistry
Assignee
BAUERFEIND AG
OA Round
1 (Non-Final)
84%
Grant Probability
Favorable
1-2
OA Rounds
2m
Est. Remaining
95%
With Interview

Examiner Intelligence

Grants 84% — above average
84%
Career Allowance Rate
1092 granted / 1303 resolved
+23.8% vs TC avg
Moderate +11% lift
Without
With
+10.8%
Interview Lift
resolved cases with interview
Typical timeline
2y 7m
Avg Prosecution
37 currently pending
Career history
1330
Total Applications
across all art units

Statute-Specific Performance

§101
2.7%
-37.3% vs TC avg
§103
24.4%
-15.6% vs TC avg
§102
20.0%
-20.0% vs TC avg
§112
30.5%
-9.5% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1303 resolved cases

Office Action

§102 §112
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 . Information Disclosure Statement Information disclosure statements were filed on 05/13/2024 and 06/05/2024. Election/Restrictions Applicant’s election without traverse of Group I, claims 1-16 in the reply filed on 09/09/2024 is acknowledged. Claims 17-23 are withdrawn from further consideration pursuant to 37 CFR 1.142(b) as being drawn to a nonelected invention, there being no allowable generic or linking claim. Election was made without traverse in the reply filed on 09/09/2024. Specification The disclosure is objected to because of the following informalities: The specification lacks a “Brief Description of the Drawings”. 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 3-5, and 7-14 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. Regarding claims 3-4, 7-14, the phrase "such as" renders the claim indefinite because it is unclear whether the limitations following the phrase are part of the claimed invention. See MPEP § 2173.05(d). Correction is requested. Claim 5 is indefinite in the listing of “oxalic acid, malonic acid, succinic acid glutaric acid, adipic acid, pimelic acid, and N-(2-aminoethyl) maleimide” in that it is not definite whether these are separate non-polymer crosslinkers or separate derivatives of hexamethylene 1,6 diamine. Clarification is requested. Claim Rejections - 35 USC § 102 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)(2) the claimed invention was described in a patent issued under section 151, or in an application for patent published or deemed published under section 122(b), in which the patent or application, as the case may be, names another inventor and was effectively filed before the effective filing date of the claimed invention. Claim(s) 1-4, 6 -7, 13, and 15-16 is/are rejected under 35 U.S.C. 102(a)(2) as being anticipated by US Patent No. 9,980,977 (Carbylan Therapeutics). Carbylan Therapeutics teaches a hydrogel particle comprising hyaluronic acid reacted with a divinyl sulfone ( see (3) – (4) ). Hyaluronic acid is a polyanion which is reacted with the divinyl sulfone to form the “sulfate or sulfonate” part of the limitation, which may be further reacted with an uncharged polymer such as a PEG (see (14) and (81) . The PEG may be linear (11) or four armed (13) or branched and multi-armed (Summary (56)). The hyaluronic acid reacted with the vinyl sulfone may be crosslinked using a thiol crosslinker (15) and (56) , (57). The polyanionic polymer may be a heparin (Summary (46). Possible thiol crosslinkers re found at Summary (53), (57), and (58) . Additives such as preservatives may be added at (85). The composition my be used to tret various forms of arthritis (Summary (47)). The claims are anticipated by Carbylan Therapeutics. Conclusion No claims are allowed. Correspondence Any inquiry concerning this communication or earlier communications from the examiner should be directed to CARLOS A AZPURU whose telephone number is (571)272-0588. The examiner can normally be reached 9 am- 3 pm, 4 pm-8pm. 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, Sue X Liu can be reached at 571-272-5539. 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. /CARLOS A AZPURU/Primary Examiner, Art Unit 1617 caz
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Prosecution Timeline

May 13, 2024
Application Filed
Sep 30, 2026
Non-Final Rejection mailed — §102, §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

1-2
Expected OA Rounds
84%
Grant Probability
95%
With Interview (+10.8%)
2y 7m (~2m remaining)
Median Time to Grant
Low
PTA Risk
Based on 1303 resolved cases by this examiner. Grant probability derived from career allowance rate.

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