PATENT CLAIM ANALYSIS

Application Number: 15939304
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2019-10
Patent Classification: ["257", "365000"]

Abstract:
A method for forming a FinFET device is described. The method includes the following steps. A substrate is patterned to form fins. Dummy gate stack is formed on the substrate and over the fins, wherein the dummy gate stack may be formed by the following steps: a dummy layer is formed; a first etching step is performed on the dummy layer with a bromine containing etching gas to form a dummy strip; a second etching step is performed on the dummy strip with a chlorine containing etching gas to form the dummy gate stack. The dummy gate stack is replaced with a gate stack.

Claim (Index 14):
A method for forming a FinFET device, comprising:\n patterning a substrate to form fins extending along a first direction; forming a dummy gate stack on the substrate and over the fins, wherein forming the dummy gate stack comprises:\n forming a dummy layer; \n performing a first etching step of the dummy layer to form a dummy strip, wherein the dummy strip has an upper portion with a substantially vertical profile, and a lower portion with separate protruding parts with tapered profiles; and \n performing a second etching step of the dummy strip to reduce a width of the protruding parts of the lower portion of the dummy strip; and \n replacing the upper portion and the lower portion with separate protruding parts of the dummy gate stack with a gate stack.

Metadata:
- Claim Count in Document: 17.0
- Percentile: 90.0
- Lexical Diversity: 2.35417
- Patent Class: 257.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['14968917', '15706764', '14515311', '14953427', '15054141']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8929301326534682
- 35 USC 102 Novelty (BERT): 0.4756892973360043
- Combined Prediction Score: 0.8512060491217218
- Mean Citation Score: 165.785548
- Max Citation Score: 173.90932
- Similarity Product: 135.5638711373091

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 1
- Claim Label 112: 1
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test