Intellectual Property & Technology

Protecting, licensing and enforcing the patents, brands, code and data that make a company worth owning.

Intellectual Property & Technology

Protecting, licensing and enforcing the patents, brands, code and data that make a company worth owning.

Intellectual Property & Technology

Protecting, licensing and enforcing the patents, brands, code and data that make a company worth owning.

Amara Osei
Jonas Weber
Freya Lund
Rafael Costa
0.0 out of 5

from 212 client reviews

  • Patents

  • Trade marks

  • Designs

  • Copyright

  • Software

  • Data & AI

  • Trade secrets

  • Licensing

  • Litigation

  • Patents

  • Trade marks

  • Designs

  • Copyright

  • Software

  • Data & AI

  • Trade secrets

  • Licensing

  • Litigation

  • Patents

  • Trade marks

  • Designs

  • Copyright

  • Software

  • Data & AI

  • Trade secrets

  • Licensing

  • Litigation

Intellectual Property & Technology

Protecting, licensing and enforcing the patents, brands, code and data that make a company worth owning.

lexicon.

§ 01 Practice

Entry 01 / 06

prac·tice.

/ˈpræk.tɪs/ · noun

1.

The work of making what you invent, name and build legally yours — and keeping it that way.

A scientist looking into a microscope in a laboratory
Patents.
pat·ent · noun
A twenty-year monopoly on an invention — drafted by people who have litigated claims like yours, so it survives the first challenge.
Drafting · FTO · Oppositions
A wall of worn wooden letterpress type blocks
Brands & designs.
brand · noun
The name, mark and look customers buy on sight. Cleared before launch, registered where you trade, defended after it.
Clearance · Filing · Watch
Server racks and cabling in a dark data room
Software & data.
code · noun
Source, models and datasets — owned, licensed and protected as the assets they already are, including what your AI was trained on.
Licensing · AI · Open source
The stone columns of a courthouse facade
Disputes.
dis·pute · noun
When someone takes what is yours, or says you took theirs. Every file is prepared as though it will reach trial.
UPC · Patents Court · IPEC
A scientist looking into a microscope in a laboratory
Patents.
pat·ent · noun
A twenty-year monopoly on an invention — drafted by people who have litigated claims like yours, so it survives the first challenge.
Drafting · FTO · Oppositions
A wall of worn wooden letterpress type blocks
Brands & designs.
brand · noun
The name, mark and look customers buy on sight. Cleared before launch, registered where you trade, defended after it.
Clearance · Filing · Watch
Server racks and cabling in a dark data room
Software & data.
code · noun
Source, models and datasets — owned, licensed and protected as the assets they already are, including what your AI was trained on.
Licensing · AI · Open source
The stone columns of a courthouse facade
Disputes.
dis·pute · noun
When someone takes what is yours, or says you took theirs. Every file is prepared as though it will reach trial.
UPC · Patents Court · IPEC

Ownership is decided long before the dispute. We make sure it is decided in your favour.

§ 02 Record

Entry 02 / 06

rec·ord.

/ˈrek.ɔːd/ · noun

1.

What has actually happened, written down — not what a pitch deck says will. Ours, since 2011:

We have filed 3,400 patents, marks and designs¹, recovered £4.2m in a single infringement action², and settled 82% of our disputes before anyone reached a courtroom³.

1

Across 28 territories, for 140 clients — from seed-stage founders to listed manufacturers.

2

Patents Court, 2023. Damages and costs, settled on the second day of trial.

3

Of contentious matters concluded since 2011.

Instructed by

  • Northgate logo
  • Meridian Holdings logo
  • Halden Group logo
  • Castleworth logo
  • Ravensbourne logo
  • Aldgate Partners logo
  • Fenwick & Co logo
  • Northgate logo
  • Meridian Holdings logo
  • Halden Group logo
  • Castleworth logo
  • Ravensbourne logo
  • Aldgate Partners logo
  • Fenwick & Co logo

Software & AI

47 clients

Consumer brands

38 clients

Robotics & hardware

31 clients

Life sciences

24 clients

§ 03 — Counsel

coun·sel.

/ˈkaʊn.səl/ · noun

The people who will actually run your matter. Scientists and engineers by training, litigators by trade — and nobody learning on your file.

Scroll — five people, one matter each

Helena Voss, Founding partner, Patents, Lexicon

01

Helena Voss

Founding partner · Patents · 2004

PhD in condensed matter physics. Twenty years drafting claims — and defending the ones other firms drafted.

Helena Voss, Founding partner, Patents, Lexicon

01

Helena Voss

Founding partner · Patents · 2004

PhD in condensed matter physics. Twenty years drafting claims — and defending the ones other firms drafted.

Tobias Achebe, Partner, Patent litigation, Lexicon

02

Tobias Achebe

Partner · Patent litigation · 2008

Electronic engineer by training. Leads our work before the UPC and the Patents Court.

Tobias Achebe, Partner, Patent litigation, Lexicon

02

Tobias Achebe

Partner · Patent litigation · 2008

Electronic engineer by training. Leads our work before the UPC and the Patents Court.

Jasleen Sandhu, Partner, Technology & data, Lexicon

03

Jasleen Sandhu

Partner · Technology & data · 2011

Wrote production code for a decade before law. Licensing, AI training data and open source.

Jasleen Sandhu, Partner, Technology & data, Lexicon

03

Jasleen Sandhu

Partner · Technology & data · 2011

Wrote production code for a decade before law. Licensing, AI training data and open source.

Oona Keating, Senior associate, Life sciences, Lexicon

05

Oona Keating

Senior associate · Life sciences · 2017

PhD in molecular biology. SPCs, biologics and oppositions at the EPO.

Oona Keating, Senior associate, Life sciences, Lexicon

05

Oona Keating

Senior associate · Life sciences · 2017

PhD in molecular biology. SPCs, biologics and oppositions at the EPO.

Marcus Lindqvist, Partner, Brands & designs, Lexicon

04

Marcus Lindqvist

Partner · Brands & designs · 2009

A former brand strategist. Takes marks from first clearance search to the injunction.

Marcus Lindqvist, Partner, Brands & designs, Lexicon

04

Marcus Lindqvist

Partner · Brands & designs · 2009

A former brand strategist. Takes marks from first clearance search to the injunction.

§ 03 — Counsel

coun·sel.

/ˈkaʊn.səl/ · noun

The people who will actually run your matter. Scientists and engineers by training, litigators by trade — and nobody learning on your file.

Scroll — five people, one matter each

Helena Voss, Founding partner, Patents, Lexicon

01

Helena Voss

Founding partner · Patents · 2004

PhD in condensed matter physics. Twenty years drafting claims — and defending the ones other firms drafted.

Tobias Achebe, Partner, Patent litigation, Lexicon

02

Tobias Achebe

Partner · Patent litigation · 2008

Electronic engineer by training. Leads our work before the UPC and the Patents Court.

Jasleen Sandhu, Partner, Technology & data, Lexicon

03

Jasleen Sandhu

Partner · Technology & data · 2011

Wrote production code for a decade before law. Licensing, AI training data and open source.

Oona Keating, Senior associate, Life sciences, Lexicon

05

Oona Keating

Senior associate · Life sciences · 2017

PhD in molecular biology. SPCs, biologics and oppositions at the EPO.

Marcus Lindqvist, Partner, Brands & designs, Lexicon

04

Marcus Lindqvist

Partner · Brands & designs · 2009

A former brand strategist. Takes marks from first clearance search to the injunction.

§ 04 — Lifecycle

Entry 04 / 06

life·cy·cle.

/ˈlaɪf.saɪ.kəl/ · noun

The four stages every idea passes through on its way to being worth something — with one partner beside it for all four. Scroll, and watch it turn.

Machined metal parts laid on engineering drawings

01

Clearance

Freedom-to-operate, prior-art and trade mark searches — before a product ships or a name goes to print, not after a competitor’s letter arrives.

Turnaround

Searches back inside five working days, with a written view on risk.

02

Protection

Claims drafted by people who litigate them, and filed where your revenue actually is — not in every territory that will take a fee.

First filing

Priority application on file inside ten working days of instruction.

03

Enforcement

Most infringements end with a letter. They end because the file was built as though they would not — prior use documented, damages modelled, the injunction drafted.

Before trial

Four in five disputes resolved before anyone reaches a courtroom.

04

Licensing

A licence, an assignment on exit, or a portfolio held for the long term — run by the partner who took the first call.

Afterwards

Due diligence, audits and renewals, on one partner’s desk from start to finish.

01

Clearance

Freedom-to-operate, prior-art and trade mark searches — before a product ships or a name goes to print, not after a competitor’s letter arrives.

Turnaround

Searches back inside five working days, with a written view on risk.

02

Protection

Claims drafted by people who litigate them, and filed where your revenue actually is — not in every territory that will take a fee.

First filing

Priority application on file inside ten working days of instruction.

03

Enforcement

Most infringements end with a letter. They end because the file was built as though they would not — prior use documented, damages modelled, the injunction drafted.

Before trial

Four in five disputes resolved before anyone reaches a courtroom.

04

Licensing

A licence, an assignment on exit, or a portfolio held for the long term — run by the partner who took the first call.

Afterwards

Due diligence, audits and renewals, on one partner’s desk from start to finish.

§ 05 Nota bene

Entry 05 / 06

n.b.

/ˌen ˈbiː/ · abbreviation

Helena Voss, founding partner of Lexicon

Helena Voss

Founding partner

“Most IP is never litigated. It is licensed, traded or quietly relied on — so the real work happens at filing, long before anyone copies anything.”

Under NDA from the first word

Nothing you disclose in a first conversation can put your novelty at risk.

We will say when it is not worth it

If a patent is not worth the fee, or a mark will not clear, you hear it from us before you spend a pound.

The cost in writing, before you commit

If something is worth enforcing, you get a number — not an hourly estimate.

§ 06 Instruct

Entry 06 / 06

in·struct.

/ɪnˈstrʌkt/ · verb

1.

To engage a lawyer to act for you. With us it starts with a conversation — free, and under NDA.

Tell us what you have made.

Send the product, the patent, or the letter that arrived this morning. We will read it under NDA, tell you where you stand, and put the options in writing before you owe us anything.

Intellectual Property & Technology

Protecting, licensing and enforcing the patents, brands, code and data that make a company worth owning.

Intellectual Property & Technology

Protecting, licensing and enforcing the patents, brands, code and data that make a company worth owning.

Intellectual Property & Technology

Protecting, licensing and enforcing the patents, brands, code and data that make a company worth owning.

Amara Osei
Jonas Weber
Freya Lund
Rafael Costa
0.0 out of 5

from 212 client reviews

  • Patents

  • Trade marks

  • Designs

  • Copyright

  • Software

  • Data & AI

  • Trade secrets

  • Licensing

  • Litigation

  • Patents

  • Trade marks

  • Designs

  • Copyright

  • Software

  • Data & AI

  • Trade secrets

  • Licensing

  • Litigation

  • Patents

  • Trade marks

  • Designs

  • Copyright

  • Software

  • Data & AI

  • Trade secrets

  • Licensing

  • Litigation

Intellectual Property & Technology

Protecting, licensing and enforcing the patents, brands, code and data that make a company worth owning.

lexicon.

§ 01 Practice

Entry 01 / 06

prac·tice.

/ˈpræk.tɪs/ · noun

1.

The work of making what you invent, name and build legally yours — and keeping it that way.

A scientist looking into a microscope in a laboratory
Patents.
pat·ent · noun
A twenty-year monopoly on an invention — drafted by people who have litigated claims like yours, so it survives the first challenge.
Drafting · FTO · Oppositions
A wall of worn wooden letterpress type blocks
Brands & designs.
brand · noun
The name, mark and look customers buy on sight. Cleared before launch, registered where you trade, defended after it.
Clearance · Filing · Watch
Server racks and cabling in a dark data room
Software & data.
code · noun
Source, models and datasets — owned, licensed and protected as the assets they already are, including what your AI was trained on.
Licensing · AI · Open source
The stone columns of a courthouse facade
Disputes.
dis·pute · noun
When someone takes what is yours, or says you took theirs. Every file is prepared as though it will reach trial.
UPC · Patents Court · IPEC
A scientist looking into a microscope in a laboratory
Patents.
pat·ent · noun
A twenty-year monopoly on an invention — drafted by people who have litigated claims like yours, so it survives the first challenge.
Drafting · FTO · Oppositions
A wall of worn wooden letterpress type blocks
Brands & designs.
brand · noun
The name, mark and look customers buy on sight. Cleared before launch, registered where you trade, defended after it.
Clearance · Filing · Watch
Server racks and cabling in a dark data room
Software & data.
code · noun
Source, models and datasets — owned, licensed and protected as the assets they already are, including what your AI was trained on.
Licensing · AI · Open source
The stone columns of a courthouse facade
Disputes.
dis·pute · noun
When someone takes what is yours, or says you took theirs. Every file is prepared as though it will reach trial.
UPC · Patents Court · IPEC

Ownership is decided long before the dispute. We make sure it is decided in your favour.

§ 02 Record

Entry 02 / 06

rec·ord.

/ˈrek.ɔːd/ · noun

1.

What has actually happened, written down — not what a pitch deck says will. Ours, since 2011:

We have filed 3,400 patents, marks and designs¹, recovered £4.2m in a single infringement action², and settled 82% of our disputes before anyone reached a courtroom³.

1

Across 28 territories, for 140 clients — from seed-stage founders to listed manufacturers.

2

Patents Court, 2023. Damages and costs, settled on the second day of trial.

3

Of contentious matters concluded since 2011.

Instructed by

  • Northgate logo
  • Meridian Holdings logo
  • Halden Group logo
  • Castleworth logo
  • Ravensbourne logo
  • Aldgate Partners logo
  • Fenwick & Co logo
  • Northgate logo
  • Meridian Holdings logo
  • Halden Group logo
  • Castleworth logo
  • Ravensbourne logo
  • Aldgate Partners logo
  • Fenwick & Co logo

Software & AI

47 clients

Consumer brands

38 clients

Robotics & hardware

31 clients

Life sciences

24 clients

§ 03 — Counsel

coun·sel.

/ˈkaʊn.səl/ · noun

The people who will actually run your matter. Scientists and engineers by training, litigators by trade — and nobody learning on your file.

Scroll — five people, one matter each

Helena Voss, Founding partner, Patents, Lexicon

01

Helena Voss

Founding partner · Patents · 2004

PhD in condensed matter physics. Twenty years drafting claims — and defending the ones other firms drafted.

Helena Voss, Founding partner, Patents, Lexicon

01

Helena Voss

Founding partner · Patents · 2004

PhD in condensed matter physics. Twenty years drafting claims — and defending the ones other firms drafted.

Tobias Achebe, Partner, Patent litigation, Lexicon

02

Tobias Achebe

Partner · Patent litigation · 2008

Electronic engineer by training. Leads our work before the UPC and the Patents Court.

Tobias Achebe, Partner, Patent litigation, Lexicon

02

Tobias Achebe

Partner · Patent litigation · 2008

Electronic engineer by training. Leads our work before the UPC and the Patents Court.

Jasleen Sandhu, Partner, Technology & data, Lexicon

03

Jasleen Sandhu

Partner · Technology & data · 2011

Wrote production code for a decade before law. Licensing, AI training data and open source.

Jasleen Sandhu, Partner, Technology & data, Lexicon

03

Jasleen Sandhu

Partner · Technology & data · 2011

Wrote production code for a decade before law. Licensing, AI training data and open source.

Oona Keating, Senior associate, Life sciences, Lexicon

05

Oona Keating

Senior associate · Life sciences · 2017

PhD in molecular biology. SPCs, biologics and oppositions at the EPO.

Oona Keating, Senior associate, Life sciences, Lexicon

05

Oona Keating

Senior associate · Life sciences · 2017

PhD in molecular biology. SPCs, biologics and oppositions at the EPO.

Marcus Lindqvist, Partner, Brands & designs, Lexicon

04

Marcus Lindqvist

Partner · Brands & designs · 2009

A former brand strategist. Takes marks from first clearance search to the injunction.

Marcus Lindqvist, Partner, Brands & designs, Lexicon

04

Marcus Lindqvist

Partner · Brands & designs · 2009

A former brand strategist. Takes marks from first clearance search to the injunction.

§ 03 — Counsel

coun·sel.

/ˈkaʊn.səl/ · noun

The people who will actually run your matter. Scientists and engineers by training, litigators by trade — and nobody learning on your file.

Scroll — five people, one matter each

Helena Voss, Founding partner, Patents, Lexicon

01

Helena Voss

Founding partner · Patents · 2004

PhD in condensed matter physics. Twenty years drafting claims — and defending the ones other firms drafted.

Tobias Achebe, Partner, Patent litigation, Lexicon

02

Tobias Achebe

Partner · Patent litigation · 2008

Electronic engineer by training. Leads our work before the UPC and the Patents Court.

Jasleen Sandhu, Partner, Technology & data, Lexicon

03

Jasleen Sandhu

Partner · Technology & data · 2011

Wrote production code for a decade before law. Licensing, AI training data and open source.

Oona Keating, Senior associate, Life sciences, Lexicon

05

Oona Keating

Senior associate · Life sciences · 2017

PhD in molecular biology. SPCs, biologics and oppositions at the EPO.

Marcus Lindqvist, Partner, Brands & designs, Lexicon

04

Marcus Lindqvist

Partner · Brands & designs · 2009

A former brand strategist. Takes marks from first clearance search to the injunction.

§ 04 — Lifecycle

Entry 04 / 06

life·cy·cle.

/ˈlaɪf.saɪ.kəl/ · noun

The four stages every idea passes through on its way to being worth something — with one partner beside it for all four. Scroll, and watch it turn.

Machined metal parts laid on engineering drawings

01

Clearance

Freedom-to-operate, prior-art and trade mark searches — before a product ships or a name goes to print, not after a competitor’s letter arrives.

Turnaround

Searches back inside five working days, with a written view on risk.

02

Protection

Claims drafted by people who litigate them, and filed where your revenue actually is — not in every territory that will take a fee.

First filing

Priority application on file inside ten working days of instruction.

03

Enforcement

Most infringements end with a letter. They end because the file was built as though they would not — prior use documented, damages modelled, the injunction drafted.

Before trial

Four in five disputes resolved before anyone reaches a courtroom.

04

Licensing

A licence, an assignment on exit, or a portfolio held for the long term — run by the partner who took the first call.

Afterwards

Due diligence, audits and renewals, on one partner’s desk from start to finish.

01

Clearance

Freedom-to-operate, prior-art and trade mark searches — before a product ships or a name goes to print, not after a competitor’s letter arrives.

Turnaround

Searches back inside five working days, with a written view on risk.

02

Protection

Claims drafted by people who litigate them, and filed where your revenue actually is — not in every territory that will take a fee.

First filing

Priority application on file inside ten working days of instruction.

03

Enforcement

Most infringements end with a letter. They end because the file was built as though they would not — prior use documented, damages modelled, the injunction drafted.

Before trial

Four in five disputes resolved before anyone reaches a courtroom.

04

Licensing

A licence, an assignment on exit, or a portfolio held for the long term — run by the partner who took the first call.

Afterwards

Due diligence, audits and renewals, on one partner’s desk from start to finish.

§ 05 Nota bene

Entry 05 / 06

n.b.

/ˌen ˈbiː/ · abbreviation

Helena Voss, founding partner of Lexicon

Helena Voss

Founding partner

“Most IP is never litigated. It is licensed, traded or quietly relied on — so the real work happens at filing, long before anyone copies anything.”

Under NDA from the first word

Nothing you disclose in a first conversation can put your novelty at risk.

We will say when it is not worth it

If a patent is not worth the fee, or a mark will not clear, you hear it from us before you spend a pound.

The cost in writing, before you commit

If something is worth enforcing, you get a number — not an hourly estimate.

§ 06 Instruct

Entry 06 / 06

in·struct.

/ɪnˈstrʌkt/ · verb

1.

To engage a lawyer to act for you. With us it starts with a conversation — free, and under NDA.

Tell us what you have made.

Send the product, the patent, or the letter that arrived this morning. We will read it under NDA, tell you where you stand, and put the options in writing before you owe us anything.

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