Documentation record

The documentation record files accessible through this page will tell you how the classification records of earlier published patents and patent applications have been updated when new United Kingdom (UK) Classification patent classifications were introduced for a particular heading.

You may find this useful if you want to order file lists from us or if you have access to our internal OPTICS database.

Documentation record files

• Introduction to Documentation Record
• Section A: Human Necessities
• Section B: Performing Operations
• Section C: Chemistry, Metallurgy
• Section D: Textiles, Paper
• Section E: Civil Engineering, Building Accessories
• Section F: Mechanics, Lighting, Heating
• Section G: Instrumentation
• Section H: Electricity

Old UK Classification patent classification marks no longer current are not deleted from our patent classification records, so searches can continue to be made for these for the period during which they were the current UK Classification patent classification marks.