PATENT CLAIM ANALYSIS

Application Number: 15957998
Application Type: Utility
Filing Date: 2018-04
Publication Date: 2018-08
Patent Classification: ["438", "692000"]

Abstract:
A method of removing a hard mask is provided. Gate stacks are patterned on a substrate, where the gate stacks include a polysilicon layer and the hard mask deposited over the polysilicon layer. A dielectric layer is deposited on the substrate and on the patterned gate stacks. A first portion of the dielectric layer is planarized by chemical mechanical polishing (CMP) to remove a topography of the dielectric layer. The hard mask and a second portion of the dielectric layer are removed by the CMP.

Claim (Index 14):
A method of removing a hard mask, the method comprising:\n patterning gate stacks on a substrate, wherein the gate stacks include a polysilicon layer and the hard mask deposited over the polysilicon layer, wherein the gate stacks are patterned in a first region and a second region, and wherein gate stacks of the second region have lower thicknesses than gate stacks of the first region; depositing a dielectric layer directly on exposed portions of the substrate between the gate stacks and on the patterned gate stacks; planarizing a first portion of the dielectric layer by chemical mechanical polishing (CMP) to completely remove the dielectric layer over the gate stacks of the first region and to partially remove the dielectric layer over the gate stacks of the second region; and removing the hard mask and a second portion of the dielectric layer by the CMP.

Metadata:
- Claim Count in Document: 41.0
- Percentile: 91.0
- Lexical Diversity: 2.16279
- Patent Class: 438.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['13958661', '12704032', '13737664', '11228741', '11019850']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8661802948875382
- 35 USC 102 Novelty (BERT): 0.5439273828387128
- Combined Prediction Score: 0.8339550036826556
- Mean Citation Score: 286.773486
- Max Citation Score: 395.53406
- Similarity Product: 364.2097783372855

Labels:
- Claim Label 101: 1
- Claim Label 102: 0
- Claim Label 103: 1
- Claim Label 112: 1
- Combined Label: 0
- Label 101 Adjusted: 1

Dataset: test