3.
The subject of the search
3.1 Basis for the search
3.2 Interpretation of claims
3.3 Amended claims
3.4 Abandonment of claims
3.5 Anticipation of amendments to claims
3.6 Broad claims
3.7 Independent and dependent claims
3.8 Search on dependent claims
3.9 Combination of elements in a claim
3.10 Different categories
3.11 Subject-matter excluded from search
3.12 Lack of unity
3.13 Technological background