Prosecution Insights
Last updated: October 04, 2026

Momenta Pharmaceuticals Inc.

Technology area: Biotechnology & Pharmaceuticals

5 pending office actions • 3 art units • 4 examiners • 0 of 5 (0%) have an AI response strategy ready • 6 patents granted in the last 365 days

Analysis

Momenta Pharmaceuticals Inc. currently has 5 pending office actions within the Biotechnology & Pharmaceuticals technology area. These actions are distributed across 3 distinct art units, indicating a focused but slightly varied technical scope. The portfolio involves 4 distinct examiners, which suggests that the 5 pending actions are not concentrated under a single individual's review. This distribution across 4 distinct examiners provides a range of perspectives within the 3 distinct art units.

The busiest examiner for this portfolio is DAHLE, CHUN WU, who is responsible for 2 pending office actions. This examiner handles a portion of the 5 total actions compared to the other distinct examiners involved. Practitioners should note that while the 3 distinct art units suggest technical consistency, the distribution of 5 actions among 4 examiners requires monitoring multiple individual prosecution styles simultaneously. The 2 actions under DAHLE, CHUN WU represent the concentration of activity for the current portfolio.

Written from this page's own data; every figure is computed from USPTO records and verified before publication.

Portfolio Summary

5
Total Pending OAs
4
Non-Final OAs
1
Final Rejections
0
Advisory / Quayle

Response Deadline Pressure

Based on the USPTO statutory response window for each pending office action. 3 of the docket's apps have a known mailing date; the rest are excluded from the tile counts.

1
Overdue
0
Due this week
2
Due this month
0
Due in next 60 days
0
Due later

Deadline Fire Line

Every pending office action with a known statutory deadline, placed on a days-until-due axis. Dots left of Today are overdue; the further right, the more runway. Cases that share a deadline window stack vertically. 3 of the docket's apps have a known mailing date.

-30dToday30d60d90d120d
Overdue (1)Due ≤ 30 days (2)

Case Difficulty Mix

Difficulty is derived from the rejection statutes on the most recent pending office action. §101-driven and multi-statute cases are graded Hard; §112-only and obviousness-type double-patenting cases are graded Easy; everything else is Medium. "Unknown" means we have not yet parsed a statute for that office action.

2
Hard (40%)
3
Medium (60%)
0
Easy (0%)
0
Unknown (0%)

Rejection Statute Mix

BucketCases
§101 + other1 (20%)
§103 only1 (20%)
Double-patenting + other2 (40%)
Multi-statute (no §101)1 (20%)

Industry Mix

How the docket's pending cases split across USPTO tech-center bands.

5
Life Sciences
100% of docket
0
Information Tech
0% of docket
0
Communications
0% of docket
0
Semiconductors
0% of docket
0
Mechanical / Eng
0% of docket
0
Business / Other
0% of docket

Time-on-OA Estimate

Manual office-action response work runs about 10 hours per case. The time-saved bands below show what IP Author's prosecution pipeline typically delivers — a conservative 20% on the low end, 35% in the middle, 50% on the high end.

50 h
Manual time on pending OAs
10 h
Time saved (low, 20%)
18 h
Time saved (mid, 35%)
0.4 wks
FTE-weeks freed (mid)

Top Examiners on this docket

ExaminerApps on this docketAllow rateInterview lift
DAHLE, CHUN WU 2 50.2% +51.2%
HADDAD, MAHER M 1 50.4% +53.9%
BOWERS, ERIN M 1 54.7% +10.6%
RAGHU, GANAPATHIRAM 1 73.6% +26.4%

Hard Cases (2)

Multi-statute / §101-driven matters, or cases in front of an examiner with an allow rate under 30%. The top 2 ordered by deadline are shown.

App #TitleExaminerDue in
18218996 Sialylated Glycoproteins HADDAD, MAHER M 36d overdue
17909282 METHODS OF MAKING HYPER-SIALYLATED IMMUNOGLOBULIN RAGHU, GANAPATHIRAM 23d

Interview Candidates (5)

Cases in front of an examiner whose interview lift is 10 percentage points or more — i.e. interviewed cases historically resolve more favorably than non-interviewed ones. The top 5 ordered by deadline are shown.

App #TitleExaminerDue in
18218996 Sialylated Glycoproteins HADDAD, MAHER M 36d overdue
18022061 HYPERSIALYLATED IMMUNOGLOBULIN BOWERS, ERIN M 8d
17909282 METHODS OF MAKING HYPER-SIALYLATED IMMUNOGLOBULIN RAGHU, GANAPATHIRAM 23d
18520171 ENGINEERED Fc CONSTRUCTS DAHLE, CHUN WU —
18351827 FcRn Antibodies and Methods of Use Thereof DAHLE, CHUN WU —

Top Art Units

Art UnitApps
1641 3
1653 1
1652 1

Pending Office Actions

App #TitleExaminerArt UnitStatutesStatusDue inAIFiled
18520171 ENGINEERED Fc CONSTRUCTS DAHLE, CHUN WU 1641 §102DP Non-Final OA — Pending Nov 27, 2023
18351827 FcRn Antibodies and Methods of Use Thereof DAHLE, CHUN WU 1641 §112DP Non-Final OA — Pending Jul 13, 2023
18218996 Sialylated Glycoproteins HADDAD, MAHER M 1641 §101§112Other Non-Final OA 36d overdue Pending Jul 06, 2023
18022061 HYPERSIALYLATED IMMUNOGLOBULIN BOWERS, ERIN M 1653 §103 Final Rejection 8d Pending Feb 17, 2023
17909282 METHODS OF MAKING HYPER-SIALYLATED IMMUNOGLOBULIN RAGHU, GANAPATHIRAM 1652 §103§112Other Non-Final OA 23d Pending Sep 02, 2022

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