Prosecution Insights
Last updated: October 04, 2026

Sientra Inc.

Technology area: Medical Devices & Mechanical Engineering

1 pending office actions • 1 art units • 1 examiners • 0 of 1 (0%) have an AI response strategy ready

Analysis

Sientra Inc. currently has 1 pending office action in the Medical Devices & Mechanical Engineering technology area. This matter is assigned to 1 distinct examiner, YANG, CHENG FONG, who is responsible for the pending office action. The prosecution is being conducted within 1 distinct art unit. Because of this pending action, the company's immediate focus is concentrated on the specific requirements of the examiner and art unit.

The busiest examiner, YANG, CHENG FONG, is the primary point of contact for the 1 pending action. For the practitioner, this means that the outcome of the current prosecution depends on the examination style and technical interpretations of this individual. The alignment of the pending action with the examiner and art unit reflects a narrow and specific interaction with the patent office at this time. This concentration allows for a focused strategy when addressing the outstanding Medical Devices & Mechanical Engineering application.

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

Portfolio Summary

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

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.

0
Hard (0%)
1
Medium (100%)
0
Easy (0%)
0
Unknown (0%)

Rejection Statute Mix

BucketCases
§103 only1 (100%)

Industry Mix

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

0
Life Sciences
0% of docket
0
Information Tech
0% of docket
0
Communications
0% of docket
0
Semiconductors
0% of docket
1
Mechanical / Eng
100% 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.

10 h
Manual time on pending OAs
2 h
Time saved (low, 20%)
4 h
Time saved (mid, 35%)
0.1 wks
FTE-weeks freed (mid)

Top Examiners on this docket

ExaminerApps on this docketAllow rateInterview lift
YANG, CHENG FONG 1 62.8% +22.5%

Interview Candidates (1)

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 1 ordered by deadline are shown.

App #TitleExaminerDue in
18525191 LIPOASPIRATE WASH SYSTEM AND METHOD YANG, CHENG FONG —

Top Art Units

Art UnitApps
3781 1

Pending Office Actions

App #TitleExaminerArt UnitStatutesStatusDue inAIFiled
18525191 LIPOASPIRATE WASH SYSTEM AND METHOD YANG, CHENG FONG 3781 §103 Non-Final OA — Pending Nov 30, 2023

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