PATENT CLAIM ANALYSIS

Application Number: 16217563
Application Type: Utility
Filing Date: 2018-12
Publication Date: 2019-05
Patent Classification: ["438", "584000"]

Abstract:
In various embodiments, etchants featuring (i) mixtures of hydrochloric acid, methanesulfonic acid, and nitric acid, or (ii) mixtures of phosphoric acid, methanesulfonic acid, and nitric acid, are utilized to etch metallic bilayers while minimizing resulting etch discontinuities between the layers of the bilayer.

Claim (Index 101):
A method of etching a metallic bilayer, the method comprising:\n providing a structure comprising (i) a base layer, and (ii) disposed over the base layer, a bilayer comprising a first metal layer and a second metal layer, wherein the first metal layer comprises an alloy of molybdenum and nickel, and the second metal layer comprises copper; forming a mask layer over the bilayer; patterning the mask layer to reveal a portion of the bilayer, a remaining portion of the mask layer defining a predetermined shape; and thereafter, applying an etchant to remove portions of the bilayer not masked by the patterned mask layer, thereby forming a patterned feature having a sidewall comprising (a) an exposed portion of the first metal layer, (b) an exposed portion of the second metal layer, and (c) an interface between the exposed portion of the first metal layer and the exposed portion of the second metal layer.

Metadata:
- Claim Count in Document: 71.0
- Percentile: 98.0
- Lexical Diversity: 1.61765
- Patent Class: 438.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15249603', '14636594', '14296796', '14296800', '14492122']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8687482556485082
- 35 USC 102 Novelty (BERT): 0.5514648521908093
- Combined Prediction Score: 0.8370199153027383
- Mean Citation Score: 302.6761
- Max Citation Score: 413.96844
- Similarity Product: 376.3925714918375

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